Ngx-bootstrap: feat: Support the RC.2 Forms

[Dinistro]

We should work on a version that supports the new forms: https://docs.google.com/document/u/1/d/1RIezQqE4aEhBRmArIAS1mRIZtWFf6JxN_7B4meyWK0Y/pub

Currently, when I disable the deprecated forms, some of the ng2-bootstrap components are not able to find NgModel and other stuff (for example in typeaheads).

[eugene1985]

I confirm, here was my problem. I have used following seed project and the angular.forms was used by default. I had no idea, why my early working code was broken in this seed project. Thank you for this issue, i have fixed my code now. If it can help, I have described my problem by stackoverflow.

[born2net]

might as well go to rc.3

[valorkin]

@Dinistro next week I will be landing a lot of changes
as you can see @otelnov helps me a lot with test coverage
so we are ready to move forward :)

[smnbbrv]

@valorkin any news on that topic? Cannot wait for this 👍

[Dinistro]

@smnbbrv There is a new PR #678. Unfortunately there are still issues with the test -> work in progress

[smnbbrv]

the issue can be closed I guess...