FIX: force encoding for title field

Job exception: incompatible character encodings: UTF-8 and ASCII-8BIT
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This exception rise up for correct(!) UTF-8 cyrillic (in my case, but non-latin overall, I suppose) in title field during RSS polling (feed polling url) and breaks topics creation.
So, just force_encoding() makes it work.
due to travis error message: can't modify frozen string
FIX: Show images in the admin section list for badges. Add help text to
indicate icons can be images too.
FIX: Password managers picking name as opposed to username
FIX: when opening links in new window link only worked once
minor fixes to welcome reply glyph images
FIX: Censored word match fail if earlier partial match
FIX: Censored word match fail if earlier partial match

Previously a list containing `one|two|three|four|twoagain` would fail to censor the word `twoagain` in the text `test1 twoagain test2`.
Merge pull request #2851 from VickMellon/title_encoding_cast

FIX: force encoding for title field
Merge pull request #2881 from DeanMarkTaylor/patch-1

FIX: Censored word match fail if earlier partial match
add overflow:hidden to blockquote (for images)
FEATURE: experimental reply-to expansion which hides intermediate posts

experimental_reply_expansion
FIX: regression latest.rss was broken
FIX: don't use latest activity as user's bio in vanilla import by default
UX: fix embedded posts background for good
UX: Added help text below profile images
UX: make sure onebox avatar's dimensions arent overriden in order to prevent 'bumps' when the image loads
FEATURE: show raw email for replies/topics created via email
only staff can view raw email
further optimize raw email feature