disable tab while browsing wizard, Refs #83
don't accept blank vm names on creation wizard, Refs #83
Fixes in metadata dialogs
This includes:
Refs #375
Minor metadata dialog fixes.
add server metadata forms
welcome page fix - Refs #279
remove metadata for a virtual server
Empty metadata list before cloning it, Refs #375
Welcome screen appears based on serverlength counter, Refs #279
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