VanirUpdater: bring up consistency with 4.4.2

* Change the ActionBars color to match the color of the Settings
  ActionBar
* Change the icon from the default one that originally came from CMs
  Updater, to the Settings icon (Consistency ftw)
* Add the new icon for xxhdpi and xxxhdpi layouts
ps5:
* Consistency with icons
* Got rid of the CyanogenMod-esque icons, and replaced  them with
(What I deemed) appropriate icons

ps3: rebase on kk44, optipng

Change-Id: Ic5fdcf99a15994d0112e98e37b4f347633489bbf
In the Vanir release cycle, only checking for releases is useless

and use linux line endings, because the CRs were taunting me.

Change-Id: Iad4e9d54a6ef7645899ceac18e942940d601bf39