Merge pull request #306 from muratmoon/master

ShareX project translated to support Turkish.
Added language setting, added translators section to about form
Runtime language change support but it not works fully so still restarting app is recommended
Added Zeta Resource Editor project
Added German translations
Removed buggy line
Merge pull request #309 from WebFreak001/master

Added German translations
Updated about form credits
Added missing translations for english and turkish
Added missing translations
Merge pull request #311 from WebFreak001/master

Added missing translations
ShareX project en, de, tr translations 100% now
Setup changes to have Languages folder
Added default (English) resx for all missing forms and controls
Removed not used resx
Better custom personal path handling
GIF quantizer bug fixed
Enable persistent connection for file upload
Merge pull request #326 from xaviergmail/pr-keepalive

Enable persistent connection for HTTP file upload
fixed #324: GIF header changes to fix Twitter problem, saving directly to hard disk instead memory