some small modifications

1. We are temporarily using a fixed number, 7, as the number of states in running daily rdahmm detection;
2. Since "today's" results always contain the results of "yesterday", we only store the results of "today". The program automatically delete "yesterday's" resulting directories after completing "today's" detection;
3. The shrunk picture in the pop-up tabs of google markers are not clear, so we added an automatic selection function to the portlet. When the user clicks a marker, the drop-down list, status change table, and result link table on the right side will automatically switch to the station name corresponding to the clicked marker, so that the user can view the big pictures by clicking the links in the result link table.