updatable widget + test structure
widget test suit
Merge branch 'dev' into dev-test
Merge branch 'dev-test' of https://github.com/SneakyBobito/mewi-js into dev-test

Conflicts:
	lib/Mewi/Widget.js
	lib/MewiUi.js
	lib/MewiUi/EditionRender.js