added dev docker instructions

git-svn-id: https://plugins.svn.wordpress.org/advertising-manager/trunk@948335 b8457f37-d9ea-0310-8a92-e5e31aec5664
remove too long description

git-svn-id: https://plugins.svn.wordpress.org/advertising-manager/trunk@948336 b8457f37-d9ea-0310-8a92-e5e31aec5664
remove css underline

git-svn-id: https://plugins.svn.wordpress.org/advertising-manager/trunk@948337 b8457f37-d9ea-0310-8a92-e5e31aec5664
optimize some tools functions

git-svn-id: https://plugins.svn.wordpress.org/advertising-manager/trunk@948338 b8457f37-d9ea-0310-8a92-e5e31aec5664