Added the ability to delete databases

Fixed the handling of returning error's from server.
Merge branch 'develop' of github.com:Starcounter/Starcounter into develop
Added unittest for testing creating templates from json and making sure triggers are correctly set as editable (i.e. invokable) for #1687
Set triggers to be Editable/invokable when specifying name ending with $, solves #1687
Removed unused old file.
Cleaned up jsonfile used in unittests.
Changed codegeneration for typed json so anonymous (empty) children for objects and arrays dont generate attributes to map to codebehind for #1708.
Updates and more asserts for unittests for typed json.
Merge branch 'develop' into issue/1687
Merge branch 'issue/1687' into develop
Temporarily increased JSON serializer buffer, until proper solution is made.
Merge branch 'develop' into issue/1719