BLD 1020: Easy access to Group Configurations page from Content Experiment component.

**Ticket: [BLD-1020] (https://openedx.atlassian.net/browse/BLD-1120)**

**Note: Functionality is complete, only BLD-1122 (Jasmine tests) if not finished.**

**Acceptance criteria:**

From the container page of a content experiment, there is already a line of text that says “This content experiment uses group configuration 'Name of the Group Configuration'”. We should make the ‘Name of the Group Configuration’ part a hyperlink to the Group Configuration page, with the selected group expanded. Page should scroll to the appropriate part of the page (e.g. if the group is the last one on the page, we should scroll to that last group automatically on hyperlink.)

**sandbox:** (http://studio.jmclaus.m.sandbox.edx.org/)

**@cahrens , @frrrances , @mhoeber , @explorerleslie** please review.
I'm concerned about using to_deprecated_string to form the Studio URL. Courses in Studio are currently running with "old-style" URLs, but with course reruns, there will be courses running with "new-style" URLs as well. @cpennington, what is the right thing to do here?