Feat/GWW-99: Add .geojson export and download chart image

[lsarni]

Ticket: GWW-99

Main features

• Enable download image option on the chart for basins, adm areas, custom selections and single reservoirs
• Add .geojson export for single reservoirs
• Move .csv export to export area at the bottom of the page

To download an image on the chart click on the arrow on the left.

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[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

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[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication