regression on ofLaunchBrowser from documentation drive
fix incorrect signature for ofGetTimestampString
Merge pull request #2977 from admsyn/fix-timestamp-string-signature

fix incorrect signature for ofGetTimestampString
ofGstVideoPlayer fix inacurate video frame count
Merge pull request #2979 from yesyesnono/master

ofGstVideoPlayer fix inacurate video frame count