Reimplement access checking as fetch function

[emodric]

Currently, only website_toolbar.tpl uses access checking to see if current user is allowed to use website toolbar per class.

There's no reason why website_toolbar_edit.tpl and website_toolbar_versionview.tpl templates don't use access checks.

To avoid code duplications, I've reimplemented access checking as fetch function to allow simple usage within all three templates.

[andrerom]

There is another patch that might be more efficient as it uses the access check function from ezjscore, take a look and see what you think.
http://issues.ez.no/IssueView.php?Id=15510&activeItem=23

[emodric]

Both solutions look good to me. I can't really say which one is more efficient though.

I do fetch a content class to see if it really exists, but if you think there's no need for it, I can take it out.