SwitcH everythingme Facebook app with Twitter app
Facebook app is no longer in everything me!

Conflicts:
	gaiatest/tests/everythingme/test_everythingme.py
Remove all remaining mixin taps
Remove mixin reference from gaia_test.py

Conflicts:
	gaiatest/tests/dialer/test_dialer_add_contact.py
	gaiatest/tests/everythingme/test_everythingme.py
Merge branch 'v1.0.1' of github.com:mozilla/gaia-ui-tests into v1.0.1