docs - dashboards (#24468)

docs/README.md

docs/administration-guide/05-setting-permissions.md

docs/administration-guide/06-collections.md

docs/administration-guide/09-setting-up-slack.md

docs/administration-guide/13-embedding.md

docs/administration-guide/application-permissions.md

docs/dashboards/filters.md

docs/dashboards/images/action-menu.png

docs/dashboards/images/add-filter.png

docs/dashboards/images/add_series.png

docs/dashboards/images/add_values.png

docs/dashboards/images/autocomplete.png

docs/dashboards/images/autorefresh.png

docs/dashboards/images/click-behavior-icon.png

docs/dashboards/images/click-behavior-menu.png

docs/dashboards/images/create.png

docs/dashboards/images/cross-filter.png

docs/dashboards/images/custom-destination.png

docs/dashboards/images/dark-mode.png

docs/dashboards/images/dashboard.png