Added unset_bootstrap

When using a website or theme already loaded with twitter bootstrap it
is unnecessary to call it again.
Seperated main bootstrap CSS files for unset_bootstrap
Merge pull request #188 from kabadabra/master

Added unset_bootstrap for the twitter bootstrap theme.
Bug fix from the unset bootstrap.
rename library class file into uppercase, and so the class name to make it work with CodeIgniter 3.0 dev
fixing toggle on title click of dialog form
Merge pull request #195 from arif-rh/master

Fixing toggle on title click when using add or edit dialog form
Change list height back to dialog_height .
Merge pull request #194 from goFrendiAsgard/master

Rename library & class name
Added paging_options in config file
Merge pull request #199 from acacha/master

Adding paging_options to config files permit users config page options without changing code
small comment changes.
Refresh datagrid for datatables theme.
bug fix when the datatables is refreshing.
Added catalan language
added slovak translation for version 1.3.1
Merge pull request #208 from bzuro/master

Updated slovak translation
Merge pull request #202 from acacha/master

Added catalan language
Make set_theme() chainable
New language: Catalan.