removing part about session engine on windows
adding comment about session engine removal
adding commands to unset session engine
reformatting note box
Updating Demo server availability for 5.0.x
Fixing webclient & webstart links I missed
Server address update
Updating screenshots
Listing demo before VA again
Adding demo server to main index new list
Merge pull request #723 from hflynn/rebased/develop/demo-server-5

Updating Demo server availability for 5.0.x (rebased onto develop)
Remove webstart limitation & whitespace fix
Remove webstart warning from demo server page
Merge pull request #725 from hflynn/rebased/develop/webstart-fix

Remove webstart limitation (rebased onto develop)
Merge pull request #720 from aleksandra-tarkowska/rebased/develop/session_engine_update

Session engine update (rebased onto develop)