InfoBar/InfoBarGenerics: Enable TIMER Button on RemoteControl

Signed-off-by: pieterg <pieterg@users.sourceforge.net>
servicedvb: allow timeshift on radio services
tstools: calcEnd corrections

-use temporary variables for getLastFrame and fixupPTS,
current values might be invalidated when the function
fails, in which case we should stick to our previous
values

-m_offset_end should not change without m_pts_end, they
are always used as a pair

issues reported by betacentauri
MovieInfo renderer: allow to show full pathname

- MetaDescription only showed short description. Skins use Event info for
  recordings to show some usefull info. But for files without event data
  nothing was shown.
  In this change MetaDescription will check for event info, short
  description and full file pathname to get some usefull info.
  SKins can now use MovieInfo MetaDescription instead of EventName
  extendedDescription
- cosmetics: use defined variables
- Maybe the short description should not check for directories to
  show full pathname anymore ...
pt_BR: translation updates by pingflood
Merge branch 'master' of git://openpli.git.sourceforge.net/gitroot/openpli/enigma2