refs #1346. Add new default theme.

- Rename 'default' theme to 'classic'.
  - rename `themes/default` to `themes/classic`
  - add new `themes/default` theme that derives from 'classic' theme for compatibility.
- setup.py depends to 'alabaster' and 'rtd' theme.
- theming.py import and run `alabaster.get_path()` to append path for alabaster theme.
- theming.py also import and run `sphinx_rtd_theme.get_html_theme_path()` to append path.
- sphinx-quickstart will generate `html_theme = 'alabaster'`.
- If user use 'default', sphinx emit notice (WARNING) suggestion to use 'alabaster' or use 'classic'.
- add documentation for new alabaster and readthedoc theme and link to original pages:
  - https://pypi.python.org/pypi/alabaster
  - https://pypi.python.org/pypi/sphinx_rtd_theme

1 files changed, 315 insertions, 0 deletions

diff --git a/sphinx/themes/classic/static/classic.css_t b/sphinx/themes/classic/static/classic.css_t
new file mode 100644
index 000000000..15d072954
--- /dev/null
+++ b/sphinx/themes/classic/static/classic.css_t
@@ -0,0 +1,315 @@
+/*
+ * default.css_t
+ * ~~~~~~~~~~~~~
+ *
+ * Sphinx stylesheet -- default theme.
+ *
+ * :copyright: Copyright 2007-2015 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+@import url("basic.css");
+
+/* -- page layout ----------------------------------------------------------- */
+
+body {
+    font-family: {{ theme_bodyfont }};
+    font-size: 100%;
+    background-color: {{ theme_footerbgcolor }};
+    color: #000;
+    margin: 0;
+    padding: 0;
+}
+
+div.document {
+    background-color: {{ theme_sidebarbgcolor }};
+}
+
+div.documentwrapper {
+    float: left;
+    width: 100%;
+}
+
+div.bodywrapper {
+    margin: 0 0 0 {{ theme_sidebarwidth|toint }}px;
+}
+
+div.body {
+    background-color: {{ theme_bgcolor }};
+    color: {{ theme_textcolor }};
+    padding: 0 20px 30px 20px;
+}
+
+{%- if theme_rightsidebar|tobool %}
+div.bodywrapper {
+    margin: 0 {{ theme_sidebarwidth|toint }}px 0 0;
+}
+{%- endif %}
+
+div.footer {
+    color: {{ theme_footertextcolor }};
+    width: 100%;
+    padding: 9px 0 9px 0;
+    text-align: center;
+    font-size: 75%;
+}
+
+div.footer a {
+    color: {{ theme_footertextcolor }};
+    text-decoration: underline;
+}
+
+div.related {
+    background-color: {{ theme_relbarbgcolor }};
+    line-height: 30px;
+    color: {{ theme_relbartextcolor }};
+}
+
+div.related a {
+    color: {{ theme_relbarlinkcolor }};
+}
+
+div.sphinxsidebar {
+    {%- if theme_stickysidebar|tobool %}
+    top: 30px;
+    bottom: 0;
+    margin: 0;
+    position: fixed;
+    overflow: auto;
+    height: auto;
+    {%- endif %}
+    {%- if theme_rightsidebar|tobool %}
+    float: right;
+    {%- if theme_stickysidebar|tobool %}
+    right: 0;
+    {%- endif %}
+    {%- endif %}
+}
+
+{%- if theme_stickysidebar|tobool %}
+/* this is nice, but it it leads to hidden headings when jumping
+   to an anchor */
+/*
+div.related {
+    position: fixed;
+}
+
+div.documentwrapper {
+    margin-top: 30px;
+}
+*/
+{%- endif %}
+
+div.sphinxsidebar h3 {
+    font-family: {{ theme_headfont }};
+    color: {{ theme_sidebartextcolor }};
+    font-size: 1.4em;
+    font-weight: normal;
+    margin: 0;
+    padding: 0;
+}
+
+div.sphinxsidebar h3 a {
+    color: {{ theme_sidebartextcolor }};
+}
+
+div.sphinxsidebar h4 {
+    font-family: {{ theme_headfont }};
+    color: {{ theme_sidebartextcolor }};
+    font-size: 1.3em;
+    font-weight: normal;
+    margin: 5px 0 0 0;
+    padding: 0;
+}
+
+div.sphinxsidebar p {
+    color: {{ theme_sidebartextcolor }};
+}
+
+div.sphinxsidebar p.topless {
+    margin: 5px 10px 10px 10px;
+}
+
+div.sphinxsidebar ul {
+    margin: 10px;
+    padding: 0;
+    color: {{ theme_sidebartextcolor }};
+}
+
+div.sphinxsidebar a {
+    color: {{ theme_sidebarlinkcolor }};
+}
+
+div.sphinxsidebar input {
+    border: 1px solid {{ theme_sidebarlinkcolor }};
+    font-family: sans-serif;
+    font-size: 1em;
+}
+
+{% if theme_collapsiblesidebar|tobool %}
+/* for collapsible sidebar */
+div#sidebarbutton {
+    background-color: {{ theme_sidebarbtncolor }};
+}
+{% endif %}
+
+/* -- hyperlink styles ------------------------------------------------------ */
+
+a {
+    color: {{ theme_linkcolor }};
+    text-decoration: none;
+}
+
+a:visited {
+    color: {{ theme_visitedlinkcolor }};
+    text-decoration: none;
+}
+
+a:hover {
+    text-decoration: underline;
+}
+
+{% if theme_externalrefs|tobool %}
+a.external {
+   text-decoration: none;
+   border-bottom: 1px dashed {{ theme_linkcolor }};
+}
+
+a.external:hover {
+   text-decoration: none;
+   border-bottom: none;
+}
+
+a.external:visited {
+    text-decoration: none;
+    border-bottom: 1px dashed {{ theme_visitedlinkcolor }};
+}
+{% endif %}
+
+/* -- body styles ----------------------------------------------------------- */
+
+div.body h1,
+div.body h2,
+div.body h3,
+div.body h4,
+div.body h5,
+div.body h6 {
+    font-family: {{ theme_headfont }};
+    background-color: {{ theme_headbgcolor }};
+    font-weight: normal;
+    color: {{ theme_headtextcolor }};
+    border-bottom: 1px solid #ccc;
+    margin: 20px -20px 10px -20px;
+    padding: 3px 0 3px 10px;
+}
+
+div.body h1 { margin-top: 0; font-size: 200%; }
+div.body h2 { font-size: 160%; }
+div.body h3 { font-size: 140%; }
+div.body h4 { font-size: 120%; }
+div.body h5 { font-size: 110%; }
+div.body h6 { font-size: 100%; }
+
+a.headerlink {
+    color: {{ theme_headlinkcolor }};
+    font-size: 0.8em;
+    padding: 0 4px 0 4px;
+    text-decoration: none;
+}
+
+a.headerlink:hover {
+    background-color: {{ theme_headlinkcolor }};
+    color: white;
+}
+
+div.body p, div.body dd, div.body li {
+    text-align: justify;
+    line-height: 130%;
+}
+
+div.admonition p.admonition-title + p {
+    display: inline;
+}
+
+div.admonition p {
+    margin-bottom: 5px;
+}
+
+div.admonition pre {
+    margin-bottom: 5px;
+}
+
+div.admonition ul, div.admonition ol {
+    margin-bottom: 5px;
+}
+
+div.note {
+    background-color: #eee;
+    border: 1px solid #ccc;
+}
+
+div.seealso {
+    background-color: #ffc;
+    border: 1px solid #ff6;
+}
+
+div.topic {
+    background-color: #eee;
+}
+
+div.warning {
+    background-color: #ffe4e4;
+    border: 1px solid #f66;
+}
+
+p.admonition-title {
+    display: inline;
+}
+
+p.admonition-title:after {
+    content: ":";
+}
+
+pre {
+    padding: 5px;
+    background-color: {{ theme_codebgcolor }};
+    color: {{ theme_codetextcolor }};
+    line-height: 120%;
+    border: 1px solid #ac9;
+    border-left: none;
+    border-right: none;
+}
+
+code {
+    background-color: #ecf0f3;
+    padding: 0 1px 0 1px;
+    font-size: 0.95em;
+}
+
+th {
+    background-color: #ede;
+}
+
+.warning code {
+    background: #efc2c2;
+}
+
+.note code {
+    background: #d6d6d6;
+}
+
+.viewcode-back {
+    font-family: {{ theme_bodyfont }};
+}
+
+div.viewcode-block:target {
+    background-color: #f4debf;
+    border-top: 1px solid #ac9;
+    border-bottom: 1px solid #ac9;
+}
+
+div.code-block-caption {
+    color: #efefef;
+    background-color: #1c4e63;
+}