OGR2GUI 0.7.4

Changelog:

• Improve UI usability.
• Language settings: Englisch (GB), German (CH) translations.
• Source projection (-s_srs srs_def) selection.
• Ini file saves language setting.

NOTE: OGR2GUI 0.7.5

Qt Linguist Manual:
http://qt-project.org/doc/qt-5/qtlinguist-index.html