closes#1189
- added tests
- added request module
- added status codes to API calls
- fixed return values of API calls
- fixed that drafts caused an error when being deleted
- fixed X-Invalidate-Cache headers
- moved testUtils.js to utils/index.js
issue #1365
- added /*jslint unparam:true*/ to functions where absolutely necessary
- added /*jslint unparam:true*/ to functions in which keeping parameter
list added clarity to the underlying api, even when those parameters
are not currently used
- removed unused parameters in a few places
closes#952
- moved api.js to api/index.js
- added api/db.js for import and export functions
- moved /ghost/debug/db/export to GET /api/v0.1/db
- moved /ghost/debug/db/import to POST /api/v0.1/db
- removed /ghost/debug/db/reset
- added validation for import
- added constraints object to migration
