Fix Debian watchfile in template

Fixes:
- http://pear.horde.org/get/ is not browsable anymore
- Properly mangle "~debian" from Debian version if needed
Debian: Replace horde4 references by horde and by move config and apps in resp. /etc/horde and /usr/share/horde
Kronolith has been removed from webmail and groupware configs

So, we don't need to create the symlinks
components: Small fixes in Debian template

- Standards-Version -> 3.9.4
- 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
Add optionnal dependency File_Fstab to Horde, as mentionned in INSTALL