Merge pull request #724 from m--stein/master

Fix for Retina Display on Mac #248
Merged PR#724 for retina text display
Remove RC patch version
Disable "Copy collection to database"; per issue #398 current
implementation is highly problematic
Disable broken "Copy Collection to Database" misfeature (#398)
Fix #726 (Update Robomongo icon) with updated images thanks to @anknetau
Fix #726 (Update Robomongo icon) with updated images thanks to @anknetau