everything me app

Conflicts:

	gaiatest/tests/everythingme/test_everythingme_app_install.py
	gaiatest/tests/everythingme/test_everythingme_search.py
	gaiatest/tests/everythingme/test_everythingme_search_accented.py
Fix code review findings
wait for app to launch; use tap instead of click
pick up changes introduced by PR #1141
add wait for categories to be displayed
verify the last page from the home screen

Conflicts:

	gaiatest/tests/everythingme/test_everythingme_app_install.py
Updates to align e.me tests with master