invitation send prompt shows after a successful response
if service is not obtained successfully, then it is set to null
formatting fix
Merge pull request #79 from rmdstudio/master

Some fixes in the Invites app
if response is not null and if it is successful
Merge pull request #80 from rmdstudio/master

if response is not null and if it is successful
alert colour is changed to success from the default blue.
prompt messages show after the successful submission
Merge pull request #81 from rmdstudio/master

more fixes in the invites app
Merge remote-tracking branch 'upstream/master'

Conflicts:
	packages/Invites/src/site/components/com_invites/controllers/connection.php