Show the full commit ID in a tooltip for the Commit field.
Show the full commit ID in a tooltip for the Commit field.

The Commit field shortens the commit ID if it's too long. It's still
useful to be able to see the full ID, though. Now, hovering over the
shortened ID will show a tooltip containing the full ID.

1tush/reviewboard,custode/reviewboard,brennie/reviewboard,bkochendorfer/reviewboard,brennie/reviewboard,sgallagher/reviewboard,custode/reviewboard,KnowNo/reviewboard,beol/reviewboard,bkochendorfer/reviewboard,custode/reviewboard,1tush/reviewboard,davidt/reviewboard,davidt/reviewboard,1tush/reviewboard,sgallagher/reviewboard,reviewboard/reviewboard,bkochendorfer/reviewboard,1tush/reviewboard,KnowNo/reviewboard,reviewboard/reviewboard,brennie/reviewboard,chipx86/reviewboard,brennie/reviewboard,1tush/reviewboard,davidt/reviewboard,KnowNo/reviewboard,1tush/reviewboard,1tush/reviewboard,sgallagher/reviewboard,1tush/reviewboard,1tush/reviewboard,davidt/reviewboard,reviewboard/reviewboard,bkochendorfer/reviewboard,chipx86/reviewboard,sgallagher/reviewboard,KnowNo/reviewboard,chipx86/reviewboard,beol/reviewboard,reviewboard/reviewboard,beol/reviewboard,beol/reviewboard,chipx86/reviewboard,custode/reviewboard