Delete Add / Edit screens (Allow add/update from server only).
Stop setting a UrlRemap reset URL (not used anymore)
Make ResourcesLoader be able to delete files (as well as directories)
Big refactor to support pushing of apps via HTTP.

This removes the AppHarness' ability to updating apps by fetching from
`cordova serve`. Instead, app resources are now pushed via
HarnessServer.
Add harness-push command-line tool for pushing apps.
Fix jshint warning.
Move curl examples out of README in favour of harness-push.
Add pushing via zip file logic.
Merge branch 'upstream' (HarnessServer per-file handling)
Fix corner-case in harness-push & add missing usage examples
Split Installer into Installer + CordovaInstaller.
Merge branch 'upstream' (Installer base class refactor)
Fix CrxInstaller to work with most recent Installer refactoring.

It now works with HarnessServer :)