FRITZFON: new module

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@7014 2b470e98-0d58-463d-a4d8-8e2adae1ed80
module: 70_STV small fix of initialize a variable - thanks fhainz

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@7015 2b470e98-0d58-463d-a4d8-8e2adae1ed80
FRITZFON: new

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@7016 2b470e98-0d58-463d-a4d8-8e2adae1ed80
FRITZFON: ringtonename

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@7017 2b470e98-0d58-463d-a4d8-8e2adae1ed80
FritzFon: Docu

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@7018 2b470e98-0d58-463d-a4d8-8e2adae1ed80