OmniTorch: redesign

What's new:
Uses HOLO theme
New launcher icon
New on/off button
SOS button is in actionbar now
New notification icon
New Widget design
Fullscreen mode

Screenshots:
https://db.tt/KCneJ3OI
https://db.tt/ePxrLGch
https://db.tt/mW5CxsxS
https://db.tt/SQiLfV4C
https://db.tt/Aa7QHSCr
https://db.tt/GUlnRZeq
https://db.tt/mjODGplr

Change-Id: Ieb4575be7369158d760d4c9efa772207b251e54d