Implement "take a screenshot" feature

* Like in android - press power+volume down, screenshots are saved
  in /sdcard/Pictures/Screenshots (if /sdcard is mounted) or /tmp

Change-Id: Iaefa15b11a1d5fdfac57d77388db1621f378a8d4
Signed-off-by: Vojtech Bocek <vbocek@gmail.com>
Remove unused twbootloader.cpp

Change-Id: I5a1d52d69662a97049fad18dc760e205c193f381
Do not wipe block misc on bootloader msg update

When set_bootloader_message_block() is called, it fopens /misc in write
binary mode, wiping all contents other than what is being written. The
bootloader msg structure is only 1024+32+32 bytes, so some manufacturers
store more than just a bootloader msg on /misc. fopen in read+append
mode so that only the bootloader msg is written and the rest of the
partition is left untouched.

Change-Id: I2d2fbdf067282744864a19d404ca7dc12f688a98
Allow custom bootloader msg offset in block misc

Use board define BOARD_RECOVERY_BLDRMSG_OFFSET with a decimal integer
to define a custom offset where the bootloader message should be
read/written.

Change-Id: Id13a23dd41bb7d907b96d657b8e21eb839dfeaa9
Only disable recovery flash if it is truly "stock" recovery

 Some roms need the recovery-from-boot.p for auto update
 of recovery. Typically the use install-[romname]-recovery.sh.
 So only disable if install-recovery.sh is present.

Change-Id: I01f89afc87b9d375d67b44b8b5e9228868a47d69
Allow ui.xml to include additional xml files to read

Use common portrait and landscape xml files based on resolution
defined by the device.

Change-Id: Iec528f9d846d49857ff98de1ac201e25dbb60339
add 1440x2560 theme to TWRP

Change-Id: I9e54d2bcfe89e1e0e3205ce2f4156cfd22dca5b5
Revert "add 1440x2560 theme to TWRP"

This reverts commit c45181db0902762fb670b56a173db7c331e564cb.

Change-Id: I9dfb2733d9eb30c32bc1e307e382ee8e4e47a0b6
add 1440x2560 theme to TWRP

Based on work by Chris Phelps <cphelps76@droidconcepts.com>
https://github.com/TEAM-Gummy/android_bootable_recovery_TWRP/commit/58963336b81ea8bcc03b8d7e4dfe4598f5afc972
https://github.com/TEAM-Gummy/android_bootable_recovery_TWRP/commit/4ec10303cb76592044c3aa449dc68a33356a6e09
https://github.com/TEAM-Gummy/android_bootable_recovery_TWRP/commit/c48bd2412332916eafd0db727d923c8c16cd35ed
https://github.com/TEAM-Gummy/android_bootable_recovery_TWRP/commit/f0944ded30e98917ca85db0185add1207ea5f4b6
But with other original changes too.

Change-Id: I809a37a3983187e62568a1e2403b6637a692220d
Update 240x240 theme

Change-Id: I1a50fa0bb750b229220c217d24253b65f24d2920
Add 320x320 theme and split out watch.xml for square watch layout

Change-Id: I7fe38b20913a981942105637a527a2d26ed035a5
Minor tweaks to watch ui.xml files

Change-Id: I9448eed41e43c4fce575b7ed12b5270a1d75f99b
Add 280x280 theme

Change-Id: Iea2fac2f1b300c312819ea2d83e1762669d357b6
Stop memory management on blanking overlay graphics

This prevents a crash in TWRP when trying to blank
the screen on devices that are using overlay graphics.

Change-Id: I155868616ffa1b211e97be97e4abe8b03dad7ca0
Allow using variables and addition/subtraction in variables

Change-Id: I1acba95302e414e1a471d27474508a7c48df0328
update 1440x2560 keyboard mapping

Change-Id: I9777e92ca26967d41625e726383ae6aa5406161d
Add possibility to use images as background or handle of slidevalue

* Add tag <resource background="x" handle="y" handlehover="z" />
  to the slidervalue object.
* All images are optional, e.g. you can use just handle or just
  background image or no images whatsoever

Change-Id: Ie0fee92965c6e883c4e532732756008dcc9e385e
Signed-off-by: Vojtech Bocek <vbocek@gmail.com>
remove stray test file
exfatfsck: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=c91c3e4c1e542e4a40bcad47ac747f62fb7312f9, not stripped

Change-Id: I32472d460a8f03776e1d215810c537b029789220
removing logging test file
updating gitignores to keep file from coming back
adding gedit backups to gitignores

Change-Id: I36d55983b34d47763cb56abf784381c06d951302
Set font based on resolution if not set already

Change-Id: I6efaeb1c508c06513ac9ace7aa72a2eefa0cb1bb