ready for 4.0

git-svn-id: https://plugins.svn.wordpress.org/awesome-surveys/trunk@979701 b8457f37-d9ea-0310-8a92-e5e31aec5664
v1.4.2 checks for existence of JavaScript validation language messages file before trying to load it

git-svn-id: https://plugins.svn.wordpress.org/awesome-surveys/trunk@979996 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated readme - why you no work changelog?

git-svn-id: https://plugins.svn.wordpress.org/awesome-surveys/trunk@980399 b8457f37-d9ea-0310-8a92-e5e31aec5664