Reset the sidebar scroll when mode changes. Preserve the position from

[dabreegster]

list mode.

Before: https://acteng.github.io/atip/scheme.html?authority=LAD_Adur&schema=pipeline
After: https://acteng.github.io/atip/fix_sidebar_scrolling/scheme.html?authority=LAD_Adur&schema=pipeline

Create a few interventions if needed. The list mode should need scrolling to see some of them. Scroll down and select one in the list or map. Before, the form opened up would start towards the bottom (depending how much you scrolled in list mode), and when returning to list mode, it usually resets to the top (if you scrolled up in the form to click save).

After, the scroll position is always reset to the top for opening new modes. When returning to list mode, it tries to preserve the scroll position from when you last selected an intervention (whether on the map or sidebar).

This was a complaint from LCWIP mappers, who had very very long sidebars and would lose their place when filling out the form one-by-one.