Add existing space users to org and better error management

Create space user's dropdown form for adding other org users #1172
Display error when service instance creation fails #1173
Amend service instance create error #1174
Properly extracts the value from form field object #1175
Restore old error message, handle a new one #1176
Specify the test selector and field name #1177
Fix user state bug #1178
Display error on service instance binding fail #1180
Remove outdated info about GovCloud env #1181
Fix invite flow depending on permissions #1182
Add Pagination for org users, org roles and org calls #1183
Remove old text from old login page #1184
Don't persist errors in different service creation forms #1185
Capitalize Cloud Foundry throughout #1186
you need to get the spaces first on the org page #1187