Changing default fallback behaviour of hovercard view

Summary:
Refs T1048; Depends on D5571 - Use names instead of `substr($handle->getType(), 0, 1).$handle->getAlternateID()`, which did not work for 70% of the handles

This, of course, breaks UI Examples, which was pretty off before anyway.

Unbreak UIExamples.

Test Plan: UIExamples, Hovercard Controller in human test mode

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T1048

Differential Revision: https://secure.phabricator.com/D5572
Based hovercards on ActionHeader

Summary: Refs T1048 - Makes it look //way// better

Test Plan: {F39347}

Reviewers: chad, epriestley, btrahan

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T1048

Differential Revision: https://secure.phabricator.com/D5587
Fix urls in Action Headers

Summary: Missed this when fixing this morning.

Test Plan: reload action headers in uiexamples.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5586
Merge branch 'master' of github.com:facebook/phabricator