Added Custom FileName settings

refactored the code (a bit)
Added INI Settings

Added Prntscr (Imgur) Uploader
Added Option to capture AllScreens (not with hotkey yet) and a costum screen
Added more try - catch
Modified the SnippetDialog (It now uses absolut screen positions to capture the picture)
Merge pull request #3 from cooler-farmer/master

I added a few more things