Use keys + mouse to scroll horizontally/ vertically

Press <Shift> + mouse scroll to scroll the sheet horizontally.
Press <Control> + mouse scroll to scroll sheet vertically.
Point urls to project website instead of github

Point urls to http://srctwig.com/oregano which gives information beyond development
Fix wscript oregano version to match git tags
Fix for multimonitor default size

This does not handle high density displays yet, use gdk_screen_get_monitor_height/width_mm() to do so
Merge pull request #79 from markvels/feature_key_assisted_mouse_scoll

Use keys + mouse to scroll horizontally/vertically