Make "Last 100" sticky

[jwk]

If the user has a large Inbox and a slow network, the "Show all" option in the WebMO Job Manager causes long waits until the whole list is displayed. Yes, I know: moving some jobs to folders reduces the size of the Inbox, however, "Show all" still delays the page display. It would be good if one could choose "Last 100" or "Last 300" and make this option stick through log-off/log-on cycles and until changed by the user.

[schmidt]

We'll consider this as an option for the future. (The reason that filters are *not* sticky by default is that, as per prior testing, users forget they have them set, and then get confused when their jobs don't show up.)