ng-content Transclusion doesn't work with element selector

[mamsoudi]

Hey there,
I found a little issue with ng-content. Apparently angular doesn't anymore let ng-content select attribute use Elements as selectors for transcluding elements. Right now it only allows making use of class and attribute selectors.

I figured out there's 4 component in ngSemantic currently using this approach:

1. Accordion
2. Card
3. Message
4. Modal

These 4 need to be updated or they won't work with the latest versions of angular 2/4.

[TroyMurphy]

You can allow html selector transclusion if you add NO_ERRORS_SCHEMA in NgModule declaration.