Added some new stuff (mainly the fix for the "new" ranks suffixes) and
removed some uneeded bits.
Also changed the gemfile so it will work on Windows too.
1. switched from autocomplete.js to jquery-textcomplete
2. style update
3. Allow mentioning by ign OR display name
4. display names can be two words and separated by a space
5. display names can be all characters, except a few special ones (punctuation etc)
6. Wildcard characters are escaped in SQL
7. Suggestions are html escaped
8. Suggestions have a timeout of 300ms, so the query is made after you stopped typing
