Add import from SQL - very rough
Rename Upgrade task to Import2x - avoid confusion with later upgrades
Add option for batch-size. Rename use_external to use-external
Add connection test when using API
Remove broken validation rule for 'proxy'
Rename API import functions to start with _api_
Fix a couple of stray typos in error messages

\\nn instead of \n\n
Merge branch 'posts-improvements-for-migration' into migration-script

Conflicts:
	application/tests/features/api.posts.feature
Import report locations
Minor fix to WKT validation: check value is a string before passing to gisconverter
Merge branch 'posts-improvements-for-migration' into migration-script
Don't sending null lat/lon values - make entire location null instead
Merge branch 'posts-improvements-for-migration' into migration-script