Add Tooltip module

frontend/src/app/main-view/main-view.component.html

@@ -2,10 +2,14 @@
   <nb-layout-header>
     <div class="actions-container">
       <nb-actions>
-        <nb-action icon="menu" (click)="toggleSidebar()"></nb-action>
+        <nb-action
+          icon="menu"
+          (click)="toggleSidebar()"
+          nbTooltip="Schowaj/Pokaż panel menu"
+        ></nb-action>
       </nb-actions>
       <nb-actions>
-        <nb-action icon="power" title="Wyloguj">Wyloguj</nb-action>
+        <nb-action icon="power" nbTooltip="Wyloguj">Wyloguj</nb-action>
       </nb-actions>
     </div>
   </nb-layout-header>

frontend/src/app/main-view/main-view.module.ts

@@ -8,6 +8,7 @@ import {
   NbLayoutModule,
   NbActionsModule,
   NbSidebarModule,
+  NbTooltipModule,
 } from '@nebular/theme';
 
 @NgModule({
@@ -18,6 +19,7 @@ import {
     NbLayoutModule,
     NbActionsModule,
     NbSidebarModule,
+    NbTooltipModule,
   ],
 })
 export class MainViewModule {}