added new space variables to margins in AddPanelWidget, add_data_source, dashboard_settings and sidemenu

changed root font to 100%(default 16px), changed font-size from px to rem, updated rem sizes in template and default.ts files, removed display classes and variables since not used, removed lead class and variables since not usedremoved serif font since not used and probably never should be used

Don't add autofitpanels to the url if it already exists

Update error message and replace npm with yarn

New issue templates

Revert "Fix for leaving playlist mode"

Fix new datasource search input

return the same panelData unless it changes

Update upgrading.md for wrong spell

Changed some more color variables to use variables

Alternative fix to detecting when to stop a playlist

Merge branch 'toggle-all-legends' of https://github.com/jsferrei/grafana into jsferrei-toggle-all-legends

fix discord notifier so it doesn't crash when there are no image generated

Keep size from copied panel

fix: Consistency in unit labels #15709

Fix restore to current folder when restoring old dashboard version