chore: disable fingerblast by default

It annoyed people during the last workshop that it blocks click events.
feat: add some more example directives

- NgShow and NgHide (result from last workshop)
- A demo page for NgShow/NgHide, using on-click to toggle them
chore: delete mockups, nobody used them during the previous workshop
Merge branch 'master' of https://github.com/mvbschot/hands-on-angular-2 into title-bar-transclusion

Conflicts:
	src/directives/index.js
	src/index.html
refactor: rename title-bar-transclude to title-bar-view-port