Added word count and characters to the toolbar

As topic.
Fixed a problem with javascript warning "mixed spaces and tabs error"

Fixed a problem with javascript warning "mixed spaces and tabs error"
Errors in taToolExecuteAction will not pass silently.
feat(taTools): Add poster image for youtube videos

Instead of loading a blank image, fetch an image from youtube
fix(taExecCommand) Shim the insertHTML function

Should fix a variety of isues that occur with insertHTML function.
Merge branch 'master' of https://github.com/peterhe2000/textAngular

Merge #319
Merge branch 'youtube-poster-image' of https://github.com/littlebigbot/textAngular

Merge #341
Merge branch 'master' of https://github.com/mik01aj/textAngular
fix(formatting) Fix tabbing
task(pre-release)

Fixes #331