Removed dependencies to SSL, HTTP and UserAgent stuff. Added two readings for last message and last result.

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4653 2b470e98-0d58-463d-a4d8-8e2adae1ed80
Added maintainer for 70_Pushover.

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4654 2b470e98-0d58-463d-a4d8-8e2adae1ed80