modifications in API

add field image in APIv1
add url for APIv2
remove some garbash
add import for APIv2 in test
add test for image in candidate APIv1
comment test for APIv1
add new version of API (v2)
add test for APIv2
Creation of test and upgrade of APIv2
fix personal_data uri
update test and APIV2
update test and APIV2, add resource_uri to link in candidate
correction APIV1 with backgrounds now called background
Merge pull request #261 from ciudadanointeligente/apiv2

Apiv2