Fix the Mobile networks icon in Settings

-shrinked a little
-centered

See the screenshots:  https://drive.google.com/folderview?id=0BxY75MbFAKsXMzF3YXJZdUhVNm8&usp=sharing

Change-Id: Ia77dbf4417a3c4dd09adc11990406e97b482ae46
Total and available fields missing in Settings storage menu

After formatting SD card or inserting an SD card the total and
available space fields in Settings storage are missing.
This fix add those fields after SD card has been mounted.

Change-Id: Id6c1d1963effdb9656c8eb1c567b913bc4d98bd2
Data traffic details: use proper string for System UID

Android System ≠ Android OS (second is a "kernel" process).
Mind the numbers:
http://goo.gl/YnFvHa (actual "system" process)
http://goo.gl/XwoISO ("system" process displayed as "kernel")
http://goo.gl/sJ9yMi ("kernel" process with different traffic data)

Depends on http://review.cyanogenmod.org/63190

Change-Id: I6f6662b7adaee069ec5f29c6926b8fbce796917d
Display BTH connected status correctly

This patch removes incorrect condition.
(to not use LocalBluetoothProfile#isPreferred())
This condition uses the priority that already disconnected profile,
so this codition always returns false.

To verify this issue:
1. Turn on Bluetooth.
2. Pair and connect to BTH(A2DP/HFP)
3. The display now says "Connected"
3. Disconnect HFP profile
4. The display still says "Connected" but it should say "Connected (no phone)"

Change-Id: I9e2bfa6d23bf1be7587c9556b4b05459d02c4817
Settings: check if NfcAdapter is null

according to the javadoc, getDefaultAdapter(Context) can return null, if
no NFC adapter exists.

check if adapter is null before trying to call isEnabled

Change-Id: I7ff5488cc3b53ce9785c3e46effcf29dc31fe0ef
Settings: Add default value for display color control (2/2)

Change-Id: I50b684abe504c21ef49492f99b18873d75509697
Settings: Remove redundancy in description

* All these settings are under a 'Volume buttons' header.
  Avoiding duplication of 'Volume button' makes it easier for
  translators

Change-Id: I51eb2de69c2f038f13d95a8e97bde1ecf83df913
Show "Eject card" for usb storage

Readd the "Eject" options if the SD card is mounted via usb.

Change-Id: I802cf4d20eb3b45ce068f89c22352f79999d593e