Epics: Sort Alphabetically

Proposal

Allow Epics to be sorted alphabetically in (at least) the /groups/*/-/epics index view.

Currently the only available options are Created date, Last updated, Start date, Due date.

From a development team perspective: Developers don't always care about the Gantt chart in play at a higher level-- they want to find an epic based on the Title. Currently that has to be done by searching since there's no way to display Epics ordered by title.

That's it. That's the whole request. @epics = @epics.order_by(:title) if params[:sort] == 'title' and adding <a href="?sort=title">Alphabetically</a> to the div.epics-other-filters ul.dropdown-menu dropdown in the UI. (Forgive me for pseudo-coding or hand-waving some of this-- my goal is mainly to establish enough of a frame of reference.)

Thanks for your time!