Implemented configurable animation direction and
prepared for release 1.2 fix #14 #15

git-svn-id: https://plugins.svn.wordpress.org/wp-photonav/trunk@965937 b8457f37-d9ea-0310-8a92-e5e31aec5664
Cleaning repository

git-svn-id: https://plugins.svn.wordpress.org/wp-photonav/trunk@965938 b8457f37-d9ea-0310-8a92-e5e31aec5664
Code refactoring and implementation of WordPress style guidelines, fix #17

git-svn-id: https://plugins.svn.wordpress.org/wp-photonav/trunk@965940 b8457f37-d9ea-0310-8a92-e5e31aec5664
Replaced outdated insert dialog with simple editor shortcode helper dialog; fix #18

git-svn-id: https://plugins.svn.wordpress.org/wp-photonav/trunk@965944 b8457f37-d9ea-0310-8a92-e5e31aec5664