Merge branch 'issue-sidebar-size' into 'master'

Changes the width of sidebar in issues and MRs when affix event fires

Fixes #1320

Width is set when Bootstraps affix event is fired and then removed when it reaches the top or bottom.

See merge request !464

app/assets/javascripts/issue.js.coffee

@@ -18,3 +18,7 @@ class @Issue
           @top = ($('.issuable-affix').offset().top - 70)
         bottom: ->
           @bottom = $('.footer').outerHeight(true)
+      $('.issuable-affix').on 'affix.bs.affix', ->
+        $(@).width($(@).outerWidth())
+      .on 'affixed-top.bs.affix affixed-bottom.bs.affix', ->
+        $(@).width('')

app/assets/javascripts/merge_request.js.coffee

@@ -26,6 +26,10 @@ class @MergeRequest
           @top = ($('.issuable-affix').offset().top - 70)
         bottom: ->
           @bottom = $('.footer').outerHeight(true)
+      $('.issuable-affix').on 'affix.bs.affix', ->
+        $(@).width($(@).outerWidth())
+      .on 'affixed-top.bs.affix affixed-bottom.bs.affix', ->
+        $(@).width('')
   # Local jQuery finder
   $: (selector) ->
@@ -160,4 +164,3 @@ class @MergeRequest
           else
             setTimeout(merge_request.mergeInProgress, 3000)
       dataType: 'json'
-