Caching recent searches for autocomplete

Added new panel at autocomplete with recent searches, minlength for
autocomplete changed to 0, but will do request to database only if 2+
chars in string. also did little changes at jquery.tagsinput
https://github.com/HotspurHN/aligulac/commit/402f562d9283bde75caf3114ea1d75dd41ba9b14