Spanish translation updates + other tweaks in English

Spanish translation updates:
 - Adds missing translations (extension-description-store info, missing strings.
 - Major proofread/editing:
   - Rewrites in order to make the texts flow more naturally in Spanish.
   - The extension name is unified back in English.
   - All English terms are either italicized or inside quotation marks following RAE's rules.
   - Likes and dislikes names have at least once the official translation from Google (I personally think they should all be changed to the official translation from Google, with the exception of the extension name).
   - Removed quite a few typos with accents.
   - Corrected a couple of discrepancies between the translated texts and the current English texts.

English text updates:
 - Fixed some words that needed uppercasing.
 - Adding a missing colon in the API page, for unification purposes.
 - Adding a missing "and" in the FAQ page.

Localization updates:
 - The unlocalizable strings in the Settings page of the extension should be localizable now.

3 files changed, 135 insertions, 21 deletions

diff --git a/Extensions/combined/_locales/en/messages.json b/Extensions/combined/_locales/en/messages.json
index 28c476c..09c536d 100644
--- a/Extensions/combined/_locales/en/messages.json
+++ b/Extensions/combined/_locales/en/messages.json
@@ -23,6 +23,9 @@
   "linkHelp": {
     "message": "Help"
   },
+  "linkChangelog": {
+    "message": "Change Log"
+  },
   "legendSettings": {
     "message": "Settings"
   },
@@ -35,6 +38,45 @@
   "textSettingsHover": {
     "message": "Stops counting your likes and dislikes."
   },
+  "textRoundingNumbers": {
+    "message": "Round down like/dislike stats (default YouTube behavior)"
+  },
+  "textRoundingNumbersHover": {
+    "message": "Show rounded down stats."
+  },
+  "textConsistentFormat": {
+    "message": "Make likes and dislikes format consistent"
+  },
+  "textConsistentFormatHover": {
+    "message": "Re-format like numbers."
+  },
+  "textNumberFormat": {
+    "message": "Number format:"
+  },
+  "textColorizeRatioBar": {
+    "message": "Colorize ratio bar"
+  },
+  "textColorizeRatioBarHover": {
+    "message": "Use custom colors for ratio bar."
+  },
+  "textColorizeThumbs": {
+    "message": "Colorize thumbs"
+  },
+  "textColorizeThumbsHover": {
+    "message": "Use custom colors for thumb icons."
+  },
+  "textColorTheme": {
+    "message": "Color theme:"
+  },
+  "textColorTheme1": {
+    "message": "Classic"
+  },
+  "textColorTheme2": {
+    "message": "Accessible"
+  },
+  "textColorTheme3": {
+    "message": "Neon"
+  },
   "textTempUnavailable": {
     "message": "temporarily unavailable"
   },
diff --git a/Extensions/combined/_locales/es/messages.json b/Extensions/combined/_locales/es/messages.json
index efb95da..3d8f855 100644
--- a/Extensions/combined/_locales/es/messages.json
+++ b/Extensions/combined/_locales/es/messages.json
@@ -1,15 +1,15 @@
 {
   "extensionName": {
-    "message": "Regresar los Dislikes de YouTube"
+    "message": "Return YouTube Dislike"
   },
   "extensionNameBeta": {
     "message": "Return YouTube Dislike Beta"
   },
   "extensionDesc": {
-    "message": "Regresa la posibilidad de ver los dislikes"
+    "message": "Recupera la característica de los «dislikes» («No me gusta»)"
   },
   "textDeveloper": {
-    "message": "por Dmitry Selivanov y la Comunidad"
+    "message": "por Dmitry Selivanov y la comunidad"
   },
   "linkWebsite": {
     "message": "Página web"
@@ -23,16 +23,82 @@
   "linkHelp": {
     "message": "Ayuda"
   },
+  "linkChangelog": {
+    "message": "Historial de cambios"
+  },
   "legendSettings": {
     "message": "Ajustes"
   },
   "textSettings": {
-    "message": "Desactivar los dislikes"
+    "message": "Desactivar envío de votos"
+  },
+  "textLikesDisabled": {
+    "message": "desactivado por el propietario"
   },
   "textSettingsHover": {
-    "message": "Dejar de contar los dislikes."
+    "message": "Deja de contar tus «Me gusta» y «No me gusta»."
+  },
+  "textRoundingNumbers": {
+    "message": "Redondear cifras (comportamiento original de YouTube)"
+  },
+  "textRoundingNumbersHover": {
+    "message": "Muestra las estadísticas redondeadas."
+  },
+  "textConsistentFormat": {
+    "message": "Unificar formato de votos"
+  },
+  "textConsistentFormatHover": {
+    "message": "Cambia el formato de las cifras de «Me gusta» y «No me gusta»."
+  },
+  "textNumberFormat": {
+    "message": "Formato de cifras:"
+  },
+  "textColorizeRatioBar": {
+    "message": "Cambiar color de barra de votos"
+  },
+  "textColorizeRatioBarHover": {
+    "message": "Utiliza colores personalizados para la barra de votos."
+  },
+  "textColorizeThumbs": {
+    "message": "Cambiar color de iconos de pulgares"
+  },
+  "textColorizeThumbsHover": {
+    "message": "Utiliza colores personalizados para los iconos de los pulgares."
+  },
+  "textColorTheme": {
+    "message": "Esquema de colores:"
+  },
+  "textColorTheme1": {
+    "message": "Clásico"
+  },
+  "textColorTheme2": {
+    "message": "Accesible"
+  },
+  "textColorTheme3": {
+    "message": "Neón"
+  },
+  "textTempUnavailable": {
+    "message": "no disponible temporalmente"
   },
   "textUpdate": {
     "message": "actualizar a"
+  },
+  "version30installed": {
+    "message": "Versión 3.0.0.1 instalada"
+  },
+  "whatsnew": {
+    "message": "Novedades"
+  },
+  "shortsSupport": {
+    "message": "Soporte para YouTube Shorts"
+  },
+  "customColors": {
+    "message": "Personalización de colores para la barra de Me gusta y sus botones"
+  },
+  "customNumberFormats": {
+    "message": "Formatos personalizados de números"
+  },
+  "considerDonating": {
+    "message": "Lo único que mantiene esta extensión a flote son vuestros donativos, rogamos que pienses en apoyar al proyecto."
   }
 }
diff --git a/Extensions/combined/popup.html b/Extensions/combined/popup.html
index 7d39246..3f20662 100644
--- a/Extensions/combined/popup.html
+++ b/Extensions/combined/popup.html
@@ -44,7 +44,7 @@
     </button>
     <br>
     <button style="margin-top: 0.3em" id="link_changelog" title="__MSG_linkChangelog__">
-      Change Log
+      __MSG_linkChangelog__
     </button>
   
     <br/>
@@ -102,20 +102,24 @@
     >
   </label>
   <br/>
-  <label class="switch" data-hover="Round down numbers (default YouTube behavior)">
+  <label class="switch" data-hover="__MSG_textRoundingNumbersHover__">
     <input type="checkbox" id="number_round_down"/>
     <span class="slider"/>
-    <span class="switchLabel">Show rounded down numbers</span>
+    <span class="switchLabel" title="__MSG_textRoundingNumbers__"
+    >__MSG_textRoundingNumbers__</span
+    >
   </label>
   <br/>
-  <label class="switch" data-hover="Make likes and dislikes format consistent">
+  <label class="switch" data-hover="__MSG_textConsistentFormatHover__">
     <input type="checkbox" id="number_reformat_likes"/>
     <span class="slider"/>
-    <span class="switchLabel">Re-format like numbers</span>
+    <span class="switchLabel" title="__MSG_textConsistentFormat__"
+    >__MSG_textConsistentFormat__</span
+    >
   </label>
   <br/>
   <div class="custom-select">
-    <label for="number_format">Number format:</label>
+    <label for="number_format">"__MSG_textNumberFormat__"</label>
     <select name="number_format" id="number_format">
       <option value="compactShort" id="number_format_compactShort"></option>
       <option value="compactLong" id="number_format_compactLong"></option>
@@ -124,26 +128,28 @@
   </div>
   <br/>
   <div class="custom-select">
-    <label class="switch" data-hover="Use custom colors for ratio bar.">
+    <label class="switch" data-hover="__MSG_textColorizeRatioBarHover__">
       <input type="checkbox" id="colored_bar"/>
       <span class="slider"/>
-      <span class="switchLabel">Colorize ratio bar</span>
+      <span class="switchLabel" title="__MSG_textColorizeRatioBar__"
+      >__MSG_textColorizeRatioBar__</span
+      >
     </label>
   </div>
-  <label class="switch" data-hover="Use custom colors for thumb icons.">
+  <label class="switch" data-hover="__MSG_textColorizeThumbsHover__">
     <input type="checkbox" id="colored_thumbs"/>
     <span class="slider"/>
-    <span class="switchLabel">Colorize thumbs</span>
+    <span class="switchLabel" title="__MSG_textColorizeThumbs__"
+    >__MSG_textColorizeThumbs__</span
+    >
   </label>
   <br/>
   <div class="custom-select">
-    <label for="color_theme">Color theme:</label>
+    <label for="color_theme">"__MSG_textColorTheme__"</label>
     <select name="color_theme" id="color_theme">
-      <option value="classic" id="color_theme_classic">Classic</option>
-      <option value="accessible" id="color_theme_accessible">
-        Accessible
-      </option>
-      <option value="neon" id="color_theme_neon">Neon</option>
+      <option value="classic" id="color_theme_classic">"__MSG_textColorTheme1__"</option>
+      <option value="accessible" id="color_theme_accessible">"__MSG_textColorTheme2__"</option>
+      <option value="neon" id="color_theme_neon">"__MSG_textColorTheme3__"</option>
     </select>
     <span
       id="color_theme_example_like"