Merge changes from forecast.py refactoring. Tests updated but there is still and issue with xarray and dash.

Merge branch 'dev-ines-refactor-hardcoded' into dev_240-update-python-to-3-11-3-and-virtual-environment-software-stack
'Refactor to forecast.py with general functions moved to generic.py and generic_callbacks.py'. Tests also updated.'

Merge branch 'dev_243-refactor-data-handler' into dev_240-update-python-to-3-11-3-and-virtual-environment-software-stack

Merge branch 'dev-view-styles' into dev_240-update-python-to-3-11-3-and-virtual-environment-software-stack. Fixes issues with Prob and Was map views resetting when date is changed. Also fixes the view menus not highlighting the current view. Testing coverage added.

Fix bug with view selectors resetting to the base case when the date is changed. This also fixes the view selectors not highlighting the selected map style. The three separate functions were combined into one.

Fixed PNG issues: colorbar hidden behind info bar, attribution data appearing in corner of screen, and formatting width offset

Fix issue with gifs not generating. Update pngs to remove the bottom navbar...

See merge request !35

Fix issue with gifs not generating. Update pngs to remove the bottom navbar from showing in png. Unify js loop scripts and shell loop scripts.