test using mysql db on travis
refactor create mysql db in travis config
remove hard coded test values
pass an XForm object to the XFormSerializer
remove hard coded test values
remove _id from result set, varies depending on the database - complicated to replace the value for each row accurately
created_on does not work as expected with mysql - mysql microsecond precision is not supported yet https://code.djangoproject.com/ticket/19716
Revert "created_on does not work as expected with mysql - mysql microsecond precision is not supported yet https://code.djangoproject.com/ticket/19716"

This reverts commit dae53f52f18e23beb72fb50c62ed9c25bcd10370.
introduce time delays with sleep
dynamic instance id for kml export test
use instance_id for query, not parsed_instance_id
pep8 cleanup
Merge pull request #1251 from modilabs/travis-mysql

Run test on mysql on travis