make createSpaceLink asynchronous
make createSpaceLink asynchronous

getStatus needs to be called before reliably being able to access
server_host.url
instead of using createExternalLink create via jquery the link
then add the href attribute later on
note this doesn't completely replicate the existing createExternalLink
function which also adds a tooltip and takes into account whether the link
should open in a new window or not

FND/tiddlyspace,FND/tiddlyspace,TiddlySpace/tiddlyspace,TiddlySpace/tiddlyspace,TiddlySpace/tiddlyspace,FND/tiddlyspace