Release-tag: v3.8

Added Boeffla Charge Level control (Please note: need some changes in the charge_level.c. Please check this commit for more details).

Added LED blink/fade control.

Added options to control LED (Green, Red and Blue LEDs separately) brightness.

Moved Display backlight control from Misc to Display and LED page.

Some internal changes in "Performance Tweaks".

Clean-ups and miscellaneous changes in Battery, FAQ and various other pages.