[core][fix] Add InstallDefaultTheme feature.
[core][fix] Service module inherit Error module
[core][fix] Install default theme on widget init
[doc][fix] Fix .htaccess
[core][fix #36] Fix : Modal doesn't scroll since Bootstrap 3.2.0
[core][fix #38] CLear Css error on fields when errors are cleared.
[doc][fix] Improve grammar and fix typos
[core][close #37] Add size on Modal
[doc][feature] Add Tutorial Link
[core][fix #39] Fix Text widget (generating error on IE8). 
Change script type to "text/javascript" (IE8 doesn't load javascript with type "application/javascript")
[core][fix #39] Add Respond.js script for IE8 to ensure bootstrap compatibility
[core][fix] Text widget extends AbstractWidget instead of Widget
[core][feature] Add A Navbar ContainerType property to switch the style of the inner container between 'container' and 'container-fluid'
[doc][fix] Remove auto scroll to top on Window resize
Merge branch 'master' into 1.1.x