[staging] Hathor webinstaller string

siehe: https://github.com/joomla/joomla-cms/commit/9d225ea256048463eddff8dc051cfef1ab682f4b#diff-3a5958e7229001ccb847a5e5576de670R11
Merge pull request #65 from zero-24/patch-6

[staging] Hathor webinstaller string