Updated Greek translation
Updated Brazilian Portuguese translation
Updated Czech translation
Updated Spanish translation
Updated Lithuanian translation
fixes timers not cleaed on intro activity end.

I have been reported that this activity creates instability
of GCompris. I found out that its timers are run even when
the activity is ended.
fixes timers not cleared on land_safe activity end.

I have been reported that this activity creates instability
of GCompris. I found out that its timers are run even when
the activity is ended.
Updated Serbian translation
Added Scottish Gaelic translation
Merge remote-tracking branch 'upstream/master'