Improve debug info.

Add generic section title support to TableView.
Add debug section title.
Use sentence case for debug labels.
Add more debug values (like weblinkable!)
Minor padding layout tweaks.
Move Julian's sweet row update logic into base class, use that from Debug (solving a bug).
- exclude "web_linkable" support, since it wasn't landed in arc-apps.

Bug: 63635841, 63638300
Test: Build and view the goodness.
Change-Id: I8f66b4f75b886b366b4eeff65afe2ac104df45d1
(cherry picked from commit f433d20a)