Fix the 'posted' view

Now is actually topics that you have posted in - previously, it was all topics you had tracked, starred, posted, read, ....
No clue how that came about.
Add spec for posted list

The test fails on 956b14a and passes on this branch
Remove confusing/incorrect comments
Delays loading spinner when switching between tabs.
Unescape topic title before setting it as the document title.
FIX: remove likes and other post actions before nuking a user
FIX: Upwards scrolling. Updates ember-cloaking
FEATURE: add redirect_users_to_top_page site setting (default to true)
Merge pull request #2213 from vikhyat/fix-title-lt

Unescape topic title before setting it as the document title
Merge pull request #2211 from velesin/delayed_tab_switch_spinner

Delays loading spinner when switching between tabs.
Merge pull request #2210 from jtescher/master

Remove confusing/incorrect comments
Merge pull request #2206 from riking/posted

Fix the 'posted' view so that it actually does something
Change comma-delim site settings to pipe-delim
Add UI for list site settings
Change render_json_error to be more general
Use render_json_error in application_controller
WIP on error resiliency