User Card Content fixes and updates

• Fix problem that made non-mention notifications have outdated user profiles (and fixed memory leak: it was adding more and more duplicate profiles that wouldn't get GC'd)
• Many visual updates to user-card-content: alignment, overflow, bad positioning fixed
• Hiding post count for main post form one.

added 2 commits

• 40ee3fdd - many visual fixes
• 0717f0b1 - dailyavg hiding

Compare with previous version

unmarked as a Work In Progress

merged

mentioned in commit 9ba969d9

mentioned in issue #243 (closed)