added the min-search-term-length site setting
updating cs translation
remove N+1 queries
add fast xor, we need really fast xor to keep our password function honest.
Merge pull request #394 from kubabrecka/cs_update8

updating cs translation
Merge pull request #390 from ZogStriP/min-search-term-length-site-setting

added the min-search-term-length site setting