Remove nowrap from PHUITagCore

Summary: Removes the outer inline-block on PHUITags, it isn't needed and causes issues in some browsers, like Chrome Android. Tags also wrap again on long tags.

Test Plan:
tested hovercards, tags, people tags, maniphest, project tags, typeahead tags.

Chrome, IE 8-11, Safari for good measure.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9439