Dashboard improvement ideas

[angerson]

(old and completed ideas have been removed from this list)

• [ ] Add toggle to use shapes instead of squares
• [ ] Add pending status support for Kokoro jobs (blocked by Kokoro-side, can't do much here)
• [ ] Maybe? If a day only has one job, just squash the status dot into one single day badge
• [ ] Normalize job titles
• [ ] Long-term: Add PR presubmit statuses
• [ ] Long-term: Make usable for other repositories