Added Bootsy WYSIWYG-ish editor.

Hacking away at post bodies and user profile text, we now have
rich-text editing and formatting.

Now to get better specs.

RSpec: 417 examples, 0 failures
RuboCop: 113 files inspected, no offenses detected
Added "Member can view own profile page" spec.

RSpec: 419 examples, 0 failures
RuboCop: 114 files inspected, no offenses detected