Refactor User#update_last_seen! and User#update_tracked_topics
Update client.zh_CN.yml
 Refactor topics controller

Refactor: 1) TopicsController to reduce code climate complexity.
2) Topic model, addressed comments

fix typo
Russian translation (actual version)
fix fr localization
Merge pull request #1580 from llindemann/master

fix fr localization
Merge pull request #1579 from abbat/master

Russian translation (actual version)
Merge pull request #1576 from ofgeek/patch-1

Update client.zh_CN.yml
Merge pull request #1559 from railsaholic/topics_controller_refactoring

Refactor topics controller and model
Reverse positions of buttons on user profile
Put back the user collapsing
some topic-list simplification
catching up with the master

Merge remote-tracking branch 'upstream/master'
Better blockquote button in Markdown editor when non-traditional markdown linebreaks
are enabled.
Oops JSHint again :(
)
further simplification over all, changes include: flatter button style, styling admin table, topic-list style
fixes wrong placement of expect in header integration test
fixes wrong placement of expect in View Topic integration test
Changed breadcrumb dropdowns
Use the debounce parameter instead of hard-coding 100