feature: custom source in setData* methods
feature: sources in events - testcase
Merge branch 'source_in_event' into 0.9

Conflicts:
	README.md
avoid usage of `self` variable because it overwrites `window.self`
move Options and Methods to wiki
describe 0.9 changes
move `jquery.handsontable.js` and `jquery.handsontable.css` to `dist/`
update notice on main page