Cleaning settings page view (#3156)

* Making inputs consistent

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Fixing hover effect in inputs

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Adding separators to sidebar menu

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Fine-tuning general section

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Fine-tuning hidden metrics area

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* EntityIcon in Settings sidebar

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Moving cluster icon settings on top

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Shrink Apply button a big

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

extensions/metrics-cluster-feature/src/metrics-settings.tsx

@@ -281,7 +281,9 @@ export class MetricsSettings extends React.Component<Props> {
             waiting={this.inProgress}
             onClick={() => this.save()}
             primary
-            disabled={!this.changed} />
+            disabled={!this.changed}
+            className="w-60 h-14"
+          />
 
           {this.canUpgrade && (<small className="hint">
             An update is available for enabled metrics components.