Minor fixes for second sister search AB test

Minor fixes for second sister search AB test

These are a few minor fixes to improved the
UX of the new sister search sidebar.

- Making the link color on sister search results blue
- Fixing the order of the multimedia search results widget
- added a more explicit 'more results' message instead
of the current '(more)' message.
- aligning the top of the sidebar with the top of the regular
search results.
- fixing a typo in the multimedia widget.

Bug: T158935
Change-Id: Iaae603cc217b7847bebfa61b050b7c86bdd19f14