Add travis config file
Merge branch 'hotfix/0.7.3.2'
Merge branch 'release/0.7.4'

Conflicts:
	.travis.yml
Bump version
Fix null long titles under MySQL; fixes #569
Disable foreign key check to prevent a SQL issue
Fix required but disabled fields issue ; fixes #571
add support for date type to dynamic fields; refs #191
Do not constraint dynamic dates selector to past dates only; refs #191
Wrong column type for visibility field, refs #577
MySQL integers are loaded as strings
Remove delete button for fixed titles; fixes #570
Rewrite FieldsConfiguration instantiation and checks; fixes #577
Fix doc, remove not used variable
Bad path after exporting; fixes #589
Give field list to FieldsConfig to avoid errors
CSV export from member list should not export the whole database; fixes #584
Change default CSV separator as Excel seems not to like commas...
Existing mailings were no longer detected; fixes #591
Booleans false must be passed as strings for postgres