Enhancement: settings reorganization & improvements, separate admin section (#4251)

* Separate admin / manage sections

* Move mail settings to its own component

* Move users and groups to its own component

* Move default permissions to its own settings tab

* Unify list styling, add tour step, refactor components

* Only patch saved views that have changed on settings save

* Update messages.xlf

* Remove unused methods in settings.component.ts

* Drop admin section to bottom of sidebar, cleanup outdated, add docs link to dropdown

* Better visually unify management list & other list pages

src-ui/src/app/components/admin/tasks/tasks.component.scss

@@ -0,0 +1,28 @@
+::ng-deep .popover {
+    max-width: 350px;
+
+    pre {
+        white-space: pre-wrap;
+        word-break: break-word;
+    }
+}
+
+pre {
+    white-space: pre-wrap;
+    word-break: break-word;
+}
+
+.result {
+    cursor: pointer;
+}
+
+.btn .spinner-border-sm {
+    width: 0.8rem;
+    height: 0.8rem;
+}
+
+@media (max-width: 575.98px) {
+    .name-col {
+        max-width: 150px;
+    }
+}