Merge pull request #272 from LoungeKatt/master

A very solid collaborative menu implementation
Update strings.xml

Typo's
Merge pull request #274 from ppsspp213/patch-1

Update strings.xml
Update RU strings.xml #3
Merge pull request #276 from Karaulov/patch-2

Update RU strings.xml #3
Integrate a semi-accurate FPS display option into settings