Status bar clock and date customization (1/2)

Thanks SlimRoms for this code.
Based on this commit:
https://github.com/SlimRoms/frameworks_base
commit/39545c535c0d0d6857dd769eeae8bda73955d3b1

Change-Id: Ib13e7fd18ae2f22c12eedb8adbae0127822faa6e
Signed-off-by: Almite <almite@hotmail.com>
Fix icons overflowing status bar view in center clock and date layout

Change-Id: I43829f58330357de7a09d8eb80141a6385aef533
Signed-off-by: Almite <almite@hotmail.com>
Add network usage stats to status bar (1/2)

Get the time delta between updates and use
that to show average bytes per second.

Change-Id: I63771220333a32063f675e6fc38c9aadb6de4274
Signed-off-by: Almite <almite@hotmail.com>

Conflicts:

	packages/SystemUI/res/values/ar_dimens.xml
	packages/SystemUI/res/values/ar_styles.xml
	packages/SystemUI/res/values/dimens.xml