Removing Chart.js dependency, and migrated backlog graph to flot
Removing Chart.js from the grunt
Use bulk order update on milestone controller (backlog).

Additionally, save methods on both, user stories and milestone
user stories are improved.
Use new markSaved method on update order field on unassigned userstories resort phase.
Remove Q library, $q service seems works properly with angular 1.2.x
Add missing dependency injection statements.
Activate mangle option of uglifyjs for generate more optimized production js files.
Remove excanvas.js because we does not support IE* browsers.
Some fixes on visualization of graphs
More cosmetic fixes on graphs
Adding curved lines to acumulative graphs
Removing borders of accumulative and open/close graphs
Fixed a i18next typo
Adding dblclick handler on US in a milestone in the backlog page
Upgrading flot to 0.8.2
Improved backlog graph
Fixed bug with select2 integration
Enabling/Disabling debug on logs
Showing correctly tags on issues when the with is shorter than the tags
I'm a maquetator :trollface: