Also using view_state in dashboard: this way the period persists
Betere melding
Updated comment
Moved graph reloading into a callback.

The view state is stored on the server and some things (like the upcoming
cache improvement in fewsjdbc...) are dependent upon that and need that to be
properly set before a reload of the graphs.
Added re-try of failed dynamic graphs
Increased the timeout from 20 to 25 seconds
Increased the retry-timeout
Made the retry timeout increase itself to prevent us from hosing the server
too much
Actually, you know, *use* the timeout in the setTimeout()...
Switched off the automatic graph reloading, switched to a clickable link.

The automatic graph reloading turned out to be a way to send the fewsjdbc
server automatically to its grave...
Updated changelog
Merge pull request #44 from lizardsystem/reinout-viewstate-fix

Reinout viewstate fix