Revert "SystemUI: Fix mobile data connection type hiding"

This reverts commit b2aac59c634158f0e3d78f41d36b89c5ab3bbfe2.

This is intentional and is only displayed when 2 connections
are connected at the same time.

E.g.  If you're connected to Wi-Fi with a captive portal, then
3G will remain connected and normal data connectivity will go
through 3G until you have logged in via Wi-Fi.

In that case, the correct display is Wi-Fi with "!" and mobile
with "3G".

Change-Id: I985c361a656d15b145e467542508dcef41f92df5
Fix the default value for long press on home.

In AOSP the values for this option are different than in CM.
Switch it back to the CM value for opening recent apps.

Change-Id: I0ded218659f6075aad6f178f3cd614fa10d40488
(cherry picked from commit c2f05dfb13db2a4eedaa2ffc29d2f1d4e8c6f5fa)
SystemUI: Update no SIM status bar icon again

Change-Id: I741aa199604fe6cb841d3a2b1f79802992ea4102
SystemUI: Vector drawables for data activity resources

Also include a transparent 'no activity' version to avoid
relayout requests of the ImageView because of size changes.

Change-Id: I0aee41f145b946c79c6bbb2a21954259ebd5f873