Clean up some card issues
Summary:
Ref T2826.
- Adds a min height (arbitrarily, height of the gradient; other choices are 60px [title + avatar], or 70px [title + projects + closed + avatar]).
- Color bars 4px -> 6px.
- Fixes profile image clipping in Firefox, etc.
- Removes background color from avatars, for transparent GIFs and such.
- Fixes shift-click to select tasks in views that can't be grabbed.
Test Plan: {F37535}
Reviewers: chad
Reviewed By: chad
CC: aran
Maniphest Tasks: T2826
Differential Revision: https://secure.phabricator.com/D5436