Image block onState change functionality added back
Uncommented caching properties
amended echo to print for consistency in view.php
Make script addition dependent on onState image being set
newline end of file
Require JQuery asset if we have an onState image set
Merge branch 'master' of https://github.com/olliephillips/concrete5-5.7.0 into olliephillips-image-block
Merge branch 'develop' of github.com:concrete5/concrete5-5.7.0 into develop