[Localization] Add Greek translation qt_el.ts

[Oswald Buddenhagen]

On Sun, Dec 14, 2014 at 12:30:16PM +0100, Dimitrios Glentadakis wrote:
> Hello, i wanted to translate the qt module in Greek.
> [...]
> So i need a little help,
> 
are you trying to translate qt 4.8 or qt 5.x?
did you follow the link in the wiki to
ftp://ftp.qt-project.org/qt/l10n/index.html ?