Make slash commands contextual

- Return only slash commands that make sense for the current noteable
- Allow slash commands decription to be dynamic

Other improvements:

- Add permission checks in slash commands definition
- Use IssuesFinder and MergeRequestsFinder
- Use next if instead of a unless block, and use splat operator instead of flatten

Signed-off-by: Rémy Coutable <remy@rymai.me>

1 files changed, 2 insertions, 1 deletions

diff --git a/Gemfile b/Gemfile
index 8b44b54e22c..7c7889fb946 100644
--- a/Gemfile
+++ b/Gemfile
@@ -209,7 +209,8 @@ gem 'mousetrap-rails', '~> 1.4.6'
 # Detect and convert string character encoding
 gem 'charlock_holmes', '~> 0.7.3'
 
-# Parse duration
+# Parse time & duration
+gem 'chronic', '~> 0.10.2'
 gem 'chronic_duration', '~> 0.10.6'
 
 gem 'sass-rails', '~> 5.0.0'