Update NSIS script.
Call updateDiskSpaceLabel() manually in onSavePathChanged(). Closes #715.
Updated translations.
Use UCS-2 LE encoding for windows resource file
Translations fixes

Do not translate strings, which should not be translated
Remove unnecessary/unused strings.

Conflicts:
	src/rss/rss_imp.cpp
Preserve original style on about dialog.
Updated translations.
Translations: Update Spanish
Translations: Spanish translate missed sentences
Merge pull request #742 from alfrix/v3_0_x

Update Spanish translation.