* Periodically update the slices in the dashboard
* Make the refresh interval changeable
* Add the button and the modal for the user to change the refresh interval
* Don't use callback for refreshing
* Randomize to prevent all widgets refreshing at the same time
* Show the loading icon as an overlay when the slices refresh
* Fixing overwrite and save slice permissions for a give role
* fix function name - build failed
* fix function name and test user permissions
* disable the button in the UI
* fix build error - characters too long in 1 line
* try to disable button on the UI
* disable cursor in caravel css. You wont be able to click anymore if no access
* fix build issues
* fix build errors! god bless me
* disable main features in dashboard and slice
* fix build issues
* Move window.alert() calls to bootstrap modals. Also log errors that occur to console.
* move misc modal to basic template so it's available on all pages.
