Change create_instance to use lat/lng instead of web mercator

The standard format for GeoJSON and points is almost invariably 4326
Fix create_instance command instance user creation

The docs for the command say that specifying a user is optional, but the
command would crash without one.  Instead, user is now required.
Merge pull request #1401 from maurizi/fix-create-instance-projection

Fix create instance projection
Improve migrator memory usage
Add more output statements
Add workarounds for SD data
Slight refactor of CartoCSS for map features
Fix production crash caused by a name longer than 30 chars

Maybe trailing blanks?
Merge pull request #1405 from RickMohr/tweak-carto-css

Slight refactor of CartoCSS for map features
Merge pull request #1406 from RickMohr/tweak-migration

Fix production crash caused by a name longer than 30 chars
Merge pull request #1403 from OpenTreeMap/experimental/sd_migrator

Experimental/sd migrator
Fix Lint
Merge pull request #1411 from maurizi/fix-lint

Fix Lint
Minor fixup

Use O(1) comparision over O(n) membership test

Fix typo
Provide default api fields

fixes #1402 on github
Only return mobile-supported instances from API

fixes #1408 on github
Merge pull request #1410 from steventlamb/topic/default_instance_fields

Topic/default instance fields