Weather logbook form with prediction.

Wave height and wave direction are being predicted with the values of
wind strength and wind direction.
Should guess values pretty good.

Database things are missing. Rest is ok.
weather overlays added to map

styling stuff still has to be done ;-)
styling of mode-choice radio buttons and checkboxes changed
load and store buttons added with a little styling
Database user changed from root to seapal
Merge branch 'logbook_form_prediction' into develop