Fixes: #2396 Fixed IPMI and weblink schemas
Fixes: #2396 Added a target=_blank in weblink
Fixes: #2404 Removed a forgotten RELEASE combobox
Fixes: #2396 IPMI interface are now object on their own
Fixes: #2420 Removed gosaUnitTag
Fixes: #2396 Missing compute_dn in ipmiGeneric
Fixes: #2396 Removed useless check in workstationGeneric