Add profile icon

app/src/main/res/drawable/ic_account_circle_black_24dp.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM12,6c1.93,0 3.5,1.57 3.5,3.5S13.93,13 12,13s-3.5,-1.57 -3.5,-3.5S10.07,6 12,6zM12,20c-2.03,0 -4.43,-0.82 -6.14,-2.88C7.55,15.8 9.68,15 12,15s4.45,0.8 6.14,2.12C16.43,19.18 14.03,20 12,20z"
+      android:fillColor="#000000"/>
+</vector>

app/src/main/res/menu/bottom_nav_menu.xml

@@ -13,7 +13,7 @@
 
     <item
         android:id="@+id/navigation_notifications"
-        android:icon="@drawable/ic_notifications_black_24dp"
+        android:icon="@drawable/ic_account_circle_black_24dp"
         android:title="@string/title_profile" />
 
 </menu>
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