Squashed commit of the following:

commit cfe928ec76df2794aaa8ac96abd2f63bb4feec63
Author: Walter C <wachen@mozilla.com>
Date:   Thu Jun 13 14:54:46 2013 +0800

    Remove cost_control.turn_on_ftu()

commit eb8c5211a52b1e5541c09747e1f666c2d2816b55
Author: Walter C <wachen@mozilla.com>
Date:   Thu Jun 13 14:15:25 2013 +0800

    fixed PEP8 issue

commit efba7e44c3bd44eba306007189da68d37a0f21a0
Author: Walter C <wachen@mozilla.com>
Date:   Tue Jun 11 17:28:05 2013 +0800

    Fixed all ftu related stuffs, added some additional functions, fixed some bad logic.
fix import contacts
https://bugzilla.mozilla.org/show_bug.cgi?id=883162
Click on coordinates of the analog clock instead of the centre which can fail occasionally
Merge pull request #1000 from zacc/clock_coord_tap

Click on coordinates of the analog clock
Merge pull request #1001 from bebef1987/fix_import_contacts

Buy beer for the WebQA team
Build on ypwalter's changes to the Cost Control FTU.
fix calendar today date case
Merge pull request #996 from zacc/mas_cost_control_ftu_fix

Cost Control FTE is using an Iframe now
test_notification_bar.py Change the wait for the notification bar to be displayed.
Old code was failing due to the app update notification interrupting.
Merge pull request #1014 from bebef1987/fix_calendar

fix calendar today date case
Merge pull request #1012 from zacc/mas_test_notif_fix

test_notification_bar.py Change the wait for the notification bar to be displayed
Remove references to panda/pandaboards from manifest files
Merge pull request #1016 from zacc/panda_extinct

Remove references to panda/pandaboards from manifest files
update locator for wallpaper_preview
Merge pull request #1018 from bebef1987/fix_walppaper

update locator for wallpaper_preview