Make checkIsMyInvitation use Django to parse the URL
Using django is more reliable and makes the code easier to read as
there is no knowledge of the url layout required.
Patch by: Sverre Rabbelier
INSERT INTO geoapp_city ("name", "point") VALUES ('Houston', 'SRID=4326;POINT (-95.363151 29.763374)');
INSERT INTO geoapp_city ("name", "point") VALUES ('Dallas', 'SRID=4326;POINT (-96.801611 32.782057)');
INSERT INTO geoapp_city ("name", "point") VALUES ('Oklahoma City', 'SRID=4326;POINT (-97.521157 34.464642)');
INSERT INTO geoapp_city ("name", "point") VALUES ('Wellington', 'SRID=4326;POINT (174.783117 -41.315268)');
INSERT INTO geoapp_city ("name", "point") VALUES ('Pueblo', 'SRID=4326;POINT (-104.609252 38.255001)');
INSERT INTO geoapp_city ("name", "point") VALUES ('Lawrence', 'SRID=4326;POINT (-95.235060 38.971823)');
INSERT INTO geoapp_city ("name", "point") VALUES ('Chicago', 'SRID=4326;POINT (-87.650175 41.850385)');
INSERT INTO geoapp_city ("name", "point") VALUES ('Victoria', 'SRID=4326;POINT (-123.305196 48.462611)');