Reimplement StencilView in ScrollView nativly.
Add option to show scroll bars permenently.
Add option to scroll proportional and in same direction as drag.
Remove unused old function.
Add option to enable scrolling from on top of the scroll bars only.
Add example when scrollview is run.
Finish implementing propotionate scrolling.
Imporve example.
Always allow mouse wheel scrolling.
fix scrolling bug.
If running on a desktop where the default is now to have a permenant scroll bar with scrolling only on the bar, the scroll bar needs to be thicker than 2dp.
Mouse scrolling doesnt need the effects. So dont use it. Fixes a mouse scrolling bug.
Fix scroll view size when no scrolling is needed.
Fix last commit.
Exposes effective width/height/y to user.
Fix filechooser to use new view_width so file size is not hidden by scrollbar.
Properly use config.
Make the example bar width consistent with the default values if desktop present/absent.
Merge pull request #1478 from matham/enable_permenant_scrolling

Add options to ScrollView similar to desktop environments