Merge pull request #137 from lexoyo/optim-app-init

improved contexts, dispatch and listen to events, need for a reference t...
Merge pull request #138 from lexoyo/optim-app-init

redraw layouts when a page is opened or closed
Merge pull request #139 from lexoyo/optim-app-init

fixed compil error
Merge pull request #140 from lexoyo/optim-app-init

redraw lautous when context changes
Merge pull request #141 from lexoyo/optim-app-init

fixed layout redraw
Merge pull request #142 from lexoyo/optim-app-init

Optim app init
Merge pull request #143 from silexlabs/optim-app-init

Optim app init