Settings: Handle navbar heights correct on dpi changes + more (2/2)

Till now we set the height in px in the settings. Which is a problem
especially on multiDPI roms like we are when the user afterwards changes
the dpi due that it isn't calculated correct anymore on the new dpi.

This commit does
- save the dp value in provider and calculate the real px in fb
- clean up the settings stuff for it + do it a bit nicer (only settings part
  where we do not set the value for the listview)
- as well this commit disables movable navbar for tablets (we may will enable
  it in future but it needs a lot more work to have it on tablets correct working)
- add Converter class for common methods we always use....till now only px->dp
  and dp->px method

Change-Id: I7320ea0578a10806883a45369dd628f2c51958fa

Conflicts:
	res/values/dimens.xml
Tentacles: notification drawer background (1/2)

    so after keyguard is mostly done let us start notification drawer
    and QS. First one custom background.....either color or picture
    with custom alpha and ability to set a landscape picture seperatly
     if the user want. (lanscape phone only)

    Compared to the 4.3 included version completly recoded and better
    integrated. No idea what I thought 1 year ago on the old implementation

    cheeers

Change-Id: I23f4502e3d9e97f52245bbf3b41900939bb5c4ce

Conflicts:
	res/values/slim_arrays.xml
	res/values/slim_strings.xml
	res/xml/notification_drawer_settings.xml

Change-Id: I23f4502e3d9e97f52245bbf3b41900939bb5c4ce

Conflicts:
	res/values/arrays.xml
	res/values/strings.xml
	src/com/oct/tentacles/SettingsActivity.java
settings: notification transparency (2/2)

this add back notification transparency...compared to 4.3
it controlls as well the notification icon backgound transparency
which felt in the past dissplaced. As well codecleanup of the old
implementation.

largeIcon support I did not add due that google does not support it
as well at current status...it is only a placeholder in
NotificationData

Conflicts:
	res/values/slim_strings.xml

Change-Id: Iacefd9d02919990517823e5d800c6e018c3c68a1
Fix