That makes that repo automatically ready for use based on user actions like
adding a new repo, switching an existing repo on, etc.
This also lowers the priority of the "update" menu item since it shouldn't
be needed any more. But leave it for now, just in case.
No need for a reusable Fragment here, its only used in one place. This
changes the structure to be a regular Activity, with all View and Menu
setup in XML files loaded in onCreate().
This also converts the URL to a TextView. Having it editable in this
Activity makes for a confusing user experience. Instead, the "Add Repo"
input should validate the URL and not allow creating repos that don't work.
This also purges the use of UpdateService.UpdateReceiver, it will be going
away in the upcoming commits.
Fixes#240.
To make this easier, I added a script to aid in downloading icons.
Checkout F-Droid/tools/download-material-icon.sh for more details.
The icons are licensed under the CCv4 attribution license, which I
added a shout out to under "License" in the README.md.
This was present in the old local repo implementation, and the skeleton
code for implementing it was copied to the swap fragment. The only change
neccesary was to add a search button to the menu and make it have a
SearchView as its action view.
