opencl: add GeForce GT330 to the device list
(cherry picked from commit 0184af5c2f226ba52d494655d1a4060834692aa6)
opencl: remove superfluous asterisks from list of nvidia gpu's
(cherry picked from commit a3c40b9ad0fa1c7dc47b51845ceb9f42af8dd485)
dithering: remove nonsensical core-option to disable dither for center view
(cherry picked from commit d0f0f937319688fbecc0b1847fcb35224ac33fa9)

Conflicts:
	doc/usermanual/darkroom/modules/correction/dithering.xml
pfm: load stat timestamp as date/time taken.

makes it possible to sort by more recent render in lt.
(cherry picked from commit 393ad00b10d9f4e40d13a6e3ce714d7e38eb9daf)
picasa: change UI references to google+ (like in 4130a7f15b)