Show install warning (akak "noob blocker")

Seriously, users should think about the risk of boot loops *before*
installing Xposed, not after they have soft-bricked their device.
jar v44
Add debug setting to disable resource hooks
Update StickyListHeaders to latest 1.x version

Fixes an error message on Gingerbread:
https://github.com/emilsjolander/StickyListHeaders/commit/d7f6fc457cab2723f61ec0e60ffb43f4eb106a3f

Closes #103
bin v49: Safemode
Translation updates

Changes were contributed by:
  [az] Sükür (closes #80)
  [bg] mamutcho (closes #87)
  [ca] divendres (closes #78)
  [hu] Adam77Root (closes #82)
  [iw] DubelBoom (closes #84)
  [ja] Noumi Ryoko (closes #73, closes #105, closes #107)
  [ms] Jay3Belas (closes #79)
  [nl] GertlilyNL (closes #72)
  [no] rosaage (closes #99)
  [sv] Fredro (closes #75)
  [vi] alienyd (closes #91)
  [zh-rCN] Yeechan Lu (closes #106)
Avoid crashes in the log section when file is too large

Many modules are compatible only with certain ROMs and produce many errors
on other ROMs. This results in a large log file. Don't load the full log
file in such cases to give users an easy chance to identify the
incompatible module and disable it.
Added option to clear debugging logs

Mainly based on pull request #71, with some modifications by rovo89.
Display a hint when the log is empty
bin v50, jar v46: More logging
Translation updates

Changes were contributed by:
  [no] rosaage (closes #108)
  [ro] razorsbk
  [sk] pyler (closes #109)
Bump version to 2.5 beta1
Update libsuperuser
Don't crash when phone is not rooted

Closing the shell throws a NPE when it couldn't be opened in the first
place. We could detect the by checking for SHELL_EXEC_FAILED explicitely,
but there might be other exceptions which shouldn't cause crashes.
Handle libsuperuser's SHELL_DIED result
Add background for installation mode text

This should give at least a little hint that it is clickable. Surely not
best solution, but better than nothing. This will become obsolete with a
redesign soon anyway.

The image is the old AOSP toast background with reduced padding.
Bump version to 2.5 beta2
Translation updates

Changes were contributed by:
  [ca] divendres (closes #115)
  [de] LibertyMarine (closes #116)
  [es] David Vaz Guijarro (closes #113)
  [ja] Noumi Ryoko (closes #110)
  [nl] GertlilyNL (closes #112)
  [nl] Leonard Simonse (closes #112)
  [sk] pyler (closes #111)
  [zh-rCN] Yeechan Lu (closes #114)
Avoid potential issues when skipping big log files

Thanks to @Tungstwenty for the heads-up.
Display translator for Arabic