Bug 927766: FTE, fix hidden network settings localizability

Add data-l10n-ide to the existing button, make all options for security
localizable
Bug 928717 - [e.me] Background image missing in HD devices
Bug 913385 - Add Hardware tests mode r=evelyn

    This patch organize old tests into API and UI parts, and add new Hardware tests.
    Also, there are some minor fixes on existing tests.
    HW tests mode provide the following tests:

    Audio loop
    Battery
    Bluetooth
    Camera
    Headphone
    LCD
    Physical keys
    Ringer
    SDCard
    Sensors
    Touch screen
    Vibrator
Bug 928912 - [e.me] Searchbar icon toggles incorrectly between Clear and Search
Bug 928499 - Background image
xfail delete test
Merge pull request #12996 from lightsofapollo/xfail-test_delete_contact.py

xfail delete test
Bug 870266 - Include phone number in the option list from call history.
Bug 928306 - [Flatfish][System] Make system dialogs not fill full screen
Merge pull request #11989 from MBRSL/eng-mode

Bug 913385 - Hardware testing app, r=evelyn
xfail on travis
Merge pull request #12999 from lightsofapollo/disable-travis-test_delete_contact.py

xfail on travis
Merge pull request #12980 from EverythingMe/928912-clear-searchbar

Bug 928912 - [e.me] Searchbar icon toggles incorrectly between Clear and Search
Merge pull request #12997 from gasolin/issue-928306

Bug 928306 - [Flatfish][System] Make system dialogs not fill full screen, r=alive
Bug 917812 - [Contacts] "Select All" should be "Select all" and buttons aren't vertically centered
Merge pull request #12956 from EverythingMe/925970-round-bgimage-dim

Bug 928717 - [e.me] Background image missing in HD devices
Merge pull request #12880 from rnowm/917812

Bug 917812 - [Contacts] "Select All" should be "Select all" and buttons aren't vertically centered
Bug 904484 - [Camera] Camera app can not calculate the orientation if there's no orientation sensor
Merge pull request #12763 from punamdahiya/Bug920387_Wallpaper_Share_Activity

Bug920387 - [Gallery] - Update Wallpaper share activity to use blob instead of data URL r=davidflanagan
Bug 922400 - [gallery][homescreen][helix] cannot set wallpaper from gallery