Supersize: Adjusts infocard and options

Changed infocard so that focusing on a node will lock the infocard.
Focus can be removed by pressing the escape key.

The options have been reorganized so that regular expressions are now
higher in the list.

Additionally added a "?" key shortcut to open help, fixed the
toolbar on small screen sizes, and added input validation for the
regex inputs.

Bug: 847599
Change-Id: I124afe3bdc162b55889b25ba35b403aca72a8435
Reviewed-on: https://chromium-review.googlesource.com/1145230
Reviewed-by: agrieve <agrieve@chromium.org>
Commit-Queue: Tiger Oakes <tigero@google.com>
Cr-Commit-Position: refs/heads/master@{#576933}
7 files changed