Design update.
Users and groups index page updates for new filter style.
Favicon
Updated styling for buttons and other tidying (addresses stupid Firefox line-height issue)
Updated button references for new styles, to use "primary" class instead of colour.
Basic keyboard shortcuts.
Changed shortcut for showing filter to be f instead of / due to conflicts with Firefox.
Removed redundant files.
Fixed bug in groups where model code was calling wrong model.
Pagination styles.
Fixed SQL command order in groups model.
Fixed School_Model to have its own count_all() function that includes the school SQL filter.
Added jQuery Really Simple Color Picker
Fix for MY_Model deleting and incorrect variable for school ID.
Added functions to session class to allow setting and getting of a return URI to help with post-redirect after edit/delete.
Finished refactor of departments section.