Fetching all dutyTypes.
Started making the updaters more generic and secured, added an EntityUpdater.java interface.
Added the DefaultEntityUpdater, has all the old logic that DutyUpdater had, but generic.
Added a SecuredEntityUpdater, uses the Default updater after he checks with the privilegeVerifier.
Now uses the the Secured updater.
No longer needs to check for permissions, duty updater does it internally.
Added an update method.
DutyTypes cascades on merge.
Added the update method to the routes.
Added select2 for css files.
Added ui-select.
Added ui-select and select2 css.
Fixed wrong base url.
Added the update method to the client service.
Finished the first version of the exemption management page.