Update packaging and use KF5 for about screen. Implement basic notifications for error messages. Use icon for app icon.

packaging/org.eyecreate.qiflora.appdata.xml

@@ -7,6 +7,8 @@
   <project_license>GPL-3.0-or-later</project_license>
   <content_rating type="oars-1.1" />
   <url type="homepage">https://git.eyecreate.org/eyecreate/qiflora</url>
+  <url type="contact">mailto:eyecreate@eyecreate.org</url>
+  <url type="donation">monero:49DAuwzCytB8cWVA8RXGcv1cviG2QRtZWW4U7KeX9mAtLfAewk8LAAwAUhwCRXD9tz8LESmgaAPrjZ62G8Z6JrdhRmLx2kY?tx_description=donation</url>
   <developer_name>eyecreate</developer_name>
   <description>
     <p>Mobile friendly application to monitor Mi Flora devices.</p>
@@ -14,10 +16,15 @@
   </description>
   <screenshots>
       <screenshot type="default">
-          <image type="source">https://git.eyecreate.org/eyecreate/qiflora/raw/v1.0/packaging/main_window.png</image>
+          <image type="source">https://git.eyecreate.org/eyecreate/qiflora/raw/v1.1/packaging/main_window.png</image>
       </screenshot>
   </screenshots>
   <releases>
       <release version="1.0" date="2019-11-8" type="stable"/>
+      <release version="1.1" date="2019-11-13" type="stable">
+          <description>
+              <p>This release adds history graph for the last 48 hours.</p>
+          </description>
+      </release>
   </releases>
 </component>