RRM model implementation

The current version shares both the model code as well as the data base structure between web and X11 versions, so that scenarios can be moved freely between installations.

1. Model scenario are stored in the data base;

2. Model input time series are read from the data base (ModelTS);

3. Model output is stored in an RRM specific data base;

4. Flow result from a scenario can be exported to the ModelTS data base to be re-used (copied) by the WRM water resources model.

5. Scenarios can be shared/exchanged between the basic interactive model and the automatic calibration tool (available as web version only).

6. Whenever the model is ready to run (the run button is green), the system first runs an automatic checking program to test the completeness, consistency, and plausibility of the scenario data. If no fatal error are encountered, the model is run (leading to the highlighting of the vire results button; if error are encountered that make a succsessful model run impossible, the error report from the checking program is displayed instead.