* Use identicon image for default gravatar.

* Fixed tests.

* implemented missing 'delete' push webhooks

moreover created ActionDeleteBranch and ActionDeleteTag

* add CommitRepoAction tests for tag/branch creation/deletion

* fixed error where push webhook not called if is new branch or tag
removed unnecessary code

* moved prepare unit test environment into separate method to be used across unit tests

* add missing if clause in pushUpdate

Signed-off-by: David Schneiderbauer <dschneiderbauer@gmail.com>

* Fix tests code to prevent some runtime errors

* Reduce nesting

* Fix user profile activity feed

* gofmt, and avoid overlapping database connections

* Fix activity feed

Preserve actions after user/repo name change

* Add missing comment

* Fix migration, and remove fields completely

* Tests