fp_setbutton patch for FLOORPLAN from Ulli


git-svn-id: https://fhem.svn.sourceforge.net/svnroot/fhem/trunk/fhem@3222 2b470e98-0d58-463d-a4d8-8e2adae1ed80
fix parsing of midnight values

git-svn-id: https://fhem.svn.sourceforge.net/svnroot/fhem/trunk/fhem@3223 2b470e98-0d58-463d-a4d8-8e2adae1ed80
- some optimisations in computing the temperature/parameter
- improving the view, witch HC is active: text "inactive" is shown in state

git-svn-id: https://fhem.svn.sourceforge.net/svnroot/fhem/trunk/fhem@3224 2b470e98-0d58-463d-a4d8-8e2adae1ed80