Merge branch 'fix-inflector' into 'master'

Remove inflector rule that makes commits uncountable
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Before: 

```
>> "commits".singularize
=> "commits"
>> "commit".pluralize
=> “commits”
```

After: 

```
>> "commits".singularize
=> "commit"
>> "commit".pluralize
=> “commits”
```

cc @rspeicher 

See merge request !1726

app/views/search/results/_commits.html.haml → app/views/search/results/_commit.html.haml

 .search-result-row
-  = render 'projects/commits/commit', project: @project, commit: commits
+  = render 'projects/commits/commit', project: @project, commit: commit

config/initializers/inflections.rb

@@ -8,24 +8,3 @@
 #   inflect.irregular 'person', 'people'
 #   inflect.uncountable %w( fish sheep )
 # end
-
-# Mark "commits" as uncountable.
-#
-# Without this change, the routes
-#
-#   resources :commit,  only: [:show], constraints: {id: /[[:alnum:]]{6,40}/}
-#   resources :commits, only: [:show], constraints: {id: /.+/}
-#
-# would generate identical route helper methods (`project_commit_path`), resulting
-# in one of them not getting a helper method at all.
-#
-# After this change, the helper methods are:
-#
-#   project_commit_path(@project, @project.commit)
-#   # => "/gitlabhq/commit/bcf03b5de6c33f3869ef70d68cf06e679d1d7f9a
-#
-#   project_commits_path(@project, 'stable/README.md')
-#   # => "/gitlabhq/commits/stable/README.md"
-ActiveSupport::Inflector.inflections do |inflect|
-  inflect.uncountable %w(commits)
-end

spec/mailers/notify_spec.rb

@@ -468,7 +468,7 @@ describe Notify do
         subject { Notify.note_commit_email(recipient.id, note.id) }
 
         it_behaves_like 'a note email'
-        it_behaves_like 'an answer to an existing thread', 'commits'
+        it_behaves_like 'an answer to an existing thread', 'commit'
 
         it 'has the correct subject' do
           is_expected.to have_subject /#{commit.title} \(#{commit.short_id}\)/