Revert "fix functional tests / remove useless imports in endurance tests"

This reverts commit 25955679ea93d0feab779d9487d62b1a7b944abe.
Revert "fix for cards_view test"

This reverts commit b7d95bc2bfd627913edbd043d0a54f20280a4801.
Revert "call touch_home_button from test code, not from apps"

This reverts commit 7df2c2a3cb93963a4101bba2af5669ca4732032e.
Revert "Bug 948383 - Move all `home button event` into GaiaDevice class"

This reverts commit 4128b7c020188757eb9cc034f550cd317d9af12f.
Bug 948383 - Move all `home button event` into GaiaDevice class
Merge pull request #14778 from KevinGrandon/revert_bug_948383

Bug 948383 - Move all `home button event` into GaiaDevice class