make expand postContainer more easier

If user don't know drag to expand and move 0 after down, then think user clicked and toggle postContainer's height between max and default 400.
new language strings for outgoing emails, and changing the anchor text to not be an URL, closed #1759, closed #1760
applying translator to messages.
latest translations
added tags to translation index
tag fallbacks
closes #1758
new language strings for #1763
fallbacks for #1763
Merge branch 'patch-3' of github.com:mani95lisa/NodeBB into mani95lisa-patch-3
fixing space-indentation, modifying behaviour a little bit so that the maximized position is not saved, and minimizing can return back to the previous saved position
callback
late night optimizations

-isMemberOfSets returns true/false instead of 1/0
-when loading the posts of a topic only get the userdata for each user
once, before this commit if a topic had 10 posts from 2 different users
we were getting the user data for each user 5 times (drunk)
-getVoteStatusByPostIDs and getFavouritesByPostIDs no longer make
pids.length calls to the db, they use isMemberOfSets now
-getUserInfoForPost renamed to getUserInfoForPosts and doesnt make
uids.length calls to db, uses getMultipleUserFields instead
removed timing
missing comma fix
Merge pull request #1764 from daxingplay/master

missing comma fix