Solve possible GSOD with e.g. MGEPG

In case a picon could not be found on channel name the getPiconName function could return false when there was no HD fallback. Now ensure that it returns an empty string instread
Add new TextBoundary tool

So that it can be used on more location instead of Timer.py alone in future
TimerList: Remove not required import of eLabel

As it was moved to the new TextBoundary tool from the previous commit
MovieList: add F1, F2 and F3 as configurable functions

In addition correct the help button functions as they are defined.
(sorry I did not had these commits separetely)
About - added red button into TranslationInfo and ComitInfo

Signed-off-by: littlesat <littlesat99@yahoo.com>
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2