Add a basic dashboard

This adds a basic dashboard using AngularJS and the managesf REST API.
Currently listing, creating and deleting projects is supported and the open
reviews and bugs are shown.

An additional method was added to managesf to GET project infos including open
issues and reviews. The data for this call is internally cached for 15 seconds
because this triggers at least four internal REST API calls.

Change-Id: I4ed959a96c932196c49c5d574a773930aa2b1a2e