main app page clean up.
login page tweaks
Fixed footer.
Merge pull request #39 from MastodonC/feature/ui-cleanup

Feature/ui cleanup
better measurements migration
add-user! so you don't have to insert directly.
fix profiles selection query
serve individual profiles as csv as well
convert timestamp into string for json output
Merge pull request #40 from MastodonC/feature/profiles_csv

Profile resource and index rendering (csv and json)
Fix java.lang.Math/abs typo
Fonts via https.
Batch insert of measurements.

- Remove queue and update dirty dates after batch is done.
- Rename measurements table and update calculations.
- Batch calculations.
- Fix difference series calc.
- Add daily sensor status check job.
- Fix measurements by slice.
- Fix getting reading by timestamp
- Fix median spike check and add more etl.
Merge pull request #41 from MastodonC/feature/batched-insert

Feature/batched insert
Don't call ring-response on measurement post response.
Add more test data.
wip: fixes to differences series and etl.
Initial working version of system efficiency overall calc.
Fix median calculation (use measurements table only).
Fix median calc.