Minor metadata dialog fixes.
This includes:
Refs #375
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
fix welcome page timing issues, Refs #279
use our own timers to keep count of the server listinstead of waiting for the ajax calls
restore welcome page timing
Remove alerts used for debugging
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