Framework: Add support to enable/disable Electron Beam (1/2)

Parts were brought over from CM9 but not all of it.  This completes
the port.

Change-Id: I2ab24581ca775ec7af3eecf7e1dcac72c91e3124
SystemUI: NL translation

to complete Dutch translation in TTools

Change-Id: Ib71293dba79c1d3361251cfbc024d7d7b7a620b8
Merge "Framework: Add support to enable/disable Electron Beam (1/2)" into cm-10.1
Pie controls: Fix event handling on chained input filters

Enabling accessibility helpers like "Magnification gestures" while
pie controls are active will result in a system reboot. After this
every input event (touch/key) will cause a system restart directly.

This commit fixes this, by making semantics for
sendInputEvent() with one filter equal to the case where more than
one input filter is installed.

Change-Id: Ie8a319e8c9a63c82c77122332c7d5dd71672cc75
Merge "Pie controls: Fix event handling on chained input filters" into cm-10.1
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_frameworks_base into linaro