Previously, if a user selected Your -> Changes twice in a row, the
page content did not get updated, even if there were new changes to
fetch.
Since the params object is reset, even if the parameters stay the same,
the dashboard view still observes that params changed. Instead of only
performing the fetch for dashboard changes on component attachment, it
is now done every time params change.
Bug: Issue 4687
Change-Id: Ia101b45e510cf612023952a8c3ebd3e7f4cc28c7