less formal language for #2335
latest translations and fallbacks
added 2 new methods to dbal

getSortedSetRangeWithScores
getSortedSetRangeByScoreWithScores
duh fixing my fail from last night
closes #2337
fix topic titles in search results

titles were being escaped twice if two or more posts were from the same
topic
fix acp topic graph disappearing

clear usedColors on ajaxify, once it was filling up the graph was never
updating after ajaxify
some checks for purge
check if post exists on up/down vote favourite