Fix issue with uploaded file not appearing in list of choices for parameter

Forgot to set the value of the parameter. Needed to append value to
list when building the parameter table.
Show an info dialog after submitting a model run

Use the RunInfoDialogBox class.
Remove custom click event handler from RunInfoDialogBox

For simplicity, just use a default ClickHandler inner class.
Don't reuse browser tab when displaying component parameter input files
Use same browser tab for displaying run status
Move client and API to new URLs
Fix error with hosts on which model can be run

I tried to be fancy and put descriptive names in place of hostnames,
forgetting that I use the hostnames later. Reverted to simply listing
hosts.
Progress on creating a popup for displaying component info