Edit documents page in line with HN suggestions

[cemac-ccs]

Add a preamble above the diagram stating 1. what the diagram means, 2. that documents can be viewed by clicking on buttons.

Add back button which returns to previous page in previous state - make the button not the same colour as the diagram

Other changes to this page required:

Should calibrated statements be included in the green diagram or as a button below the diagram? Code currently has button, but commented code for addition to diagram exists

One sentence descriptions of each descriptor to be added for each popup. Commented code exists as placeholder so that SJ can make this change himself

Formatting of popups is slightly off.

[StewartJennings]

Add a preamble above the diagram stating 1. what the diagram means, 2. that documents can be viewed by clicking on buttons.

• have changed scenarios.html.j2 text as follows to add "For example, land use informs food production, and food production informs nutrition security and climate smartness":
• "The diagram below shows the different aspects of the iFEED analysis for this scenario, and how each component feeds into the others (see our iFEED Methodology page for more information about how each of these aspects work together to form the final analysis). For example, land use change informs food production, and food production informs nutrition security and climate smartness."

Add back button which returns to previous page in previous state - make the button not the same colour as the diagram

Other changes to this page required:
Should calibrated statements be included in the green diagram or as a button below the diagram? Code currently has button, but commented code for addition to diagram exists

• I think this is fine as it is.

One sentence descriptions of each descriptor to be added for each popup. Commented code exists as placeholder so that SJ can make this change himself

• have changed scenarios.html.j2 as follows to include these sentences - although i think these might need to be uncommented, but have not tried to do this as did not want to break anything!
• Climate smartness sentence: "Changes to food production, emissions, soil carbon, and climate change adaptation."
• Land use: "Changes to agricultural land use and resulting changes to food production, including impacts on crop yields and pests and diseases.".
• Food production: "Changes to agricultural land use and resulting changes to food production, including impacts on crop yields and pests and diseases.".
• Climate shocks and extremes: "Summary of climate change projections - changes to extremes and average temperature and rainfall by 2050.".
• Trade and nutrition security: "Assessment of how per capita nutrition security will change, given projected changes to food production and different possible scenarios of trade.".

Formatting of popups is slightly off.