Fix watchfile
Debian: Remove horde4 references and by moving config and apps in resp. /etc/horde and /usr/share/horde
Kronolith has been removed from webmail and groupware configs
Small fixes

- Standards-Version -> 3.9.3
- hardcode Upstream Homepage (dynamic fields in sources only replaced in binary packages)
Specific debian/rules file for ansel, gollem, sesha and whups configs
Package name and directory name should correspond
Ignore comments in package.xml, as found in Horde_Kolab_Freebusy
Add optionnal dependency File_Fstab to Horde, as mentionned in INSTALL