Refactor entry API: consolidate entry handling, update naming conventions, and enhance error reporting

public/templates/standard/admin_home/home.html

@@ -101,7 +101,7 @@
                 <md-icon-button id="toggle" aria-label="Menü ein-/ausklappen">
                     <md-icon>menu</md-icon>
                 </md-icon-button>
-                <span class="title">Dashboard</span>
+                <span class="md-typescale-body-large title">%appname%</span>
             </div>
 
             <md-list>
@@ -117,7 +117,14 @@
         </aside>
 
         <main class="content">
-            <h1>Dashboard</h1>
+            <h1 class="md-typescale-display-large">%appname%</h1>
+            <h3 class="md-typescale-display-medium">Entrys</h3>
+            <md-list>
+                <md-list-item>
+                    <div slot="headline">Cucumber</div>
+                    <div slot="supporting-text">Cucumbers are long green fruits that are just as long as this multi-line description</div>
+                </md-list-item>
+            </md-list>
         </main>
     </div>