Enable built-in widget by default - props by MadtownLems

git-svn-id: https://plugins.svn.wordpress.org/subscribe2/trunk@864142 b8457f37-d9ea-0310-8a92-e5e31aec5664
Move load-strings() function and introduce lockout feature

git-svn-id: https://plugins.svn.wordpress.org/subscribe2/trunk@864547 b8457f37-d9ea-0310-8a92-e5e31aec5664
Use a better method for unendcoding HTML special characters for plain text emails - proposed by Dainius Kaupaitis

git-svn-id: https://plugins.svn.wordpress.org/subscribe2/trunk@865691 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixed a bug affecting handling of Registered users with email aliases (e.g. name+alias@gmail.com) - thanks to Alexandre (bosseal)

git-svn-id: https://plugins.svn.wordpress.org/subscribe2/trunk@865693 b8457f37-d9ea-0310-8a92-e5e31aec5664