- favicons for all platforms

- deleting message box in contact view
- optional property for showing heading in PersonTable.vue
- showing reference type and additional abstratcs in detail view of dataset
- reduced relationTypes for references

public/images/help/secure_data.svg

@@ -1,4 +1,4 @@
-<svg id="e8f68bdd-4984-4f2e-95b7-7fc8ec281257" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="140" height="80" viewBox="0 0 918.14 765.54">
+<svg id="78492d38-7a4a-11ea-bc55-0242ac130003" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="140" height="80" viewBox="0 0 918.14 765.54">
     <defs/>
     <!--linkes Blatt-->
     <rect x="169" y="94.7" width="455" height="609.1" style="fill:#f2f2f2;stroke:#6b716f;stroke-width:1"/>

public/images/help/specs.svg

@@ -1,4 +1,4 @@
-<svg id="f31880e0-b367-484e-a419-f98cd1dead11" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="130" height="80" viewBox="0 0 813.71645 690.72993">
+<svg id="1001c996-7a4b-11ea-bc55-0242ac130003" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="130" height="80" viewBox="0 0 813.71645 690.72993">
     <defs>
     <linearGradient id="gradient" x1="0%" y1="0%" x2="0" y2="100%">
       <stop offset="0%" style="stop-color:skyblue;" />

public/images/help/upload.svg

@@ -1,6 +1,5 @@
-<svg id="fc1f5aea-a643-4136-ad0f-c5867679d735" data-name="Layer 1" 
-    xmlns="http://www.w3.org/2000/svg" width="130" height="80" viewBox="0 0 1075.56483 723">
-    <title>add_file</title>
+<svg id="20095fb6-7a4b-11ea-bc55-0242ac130003" 
+    xmlns="http://www.w3.org/2000/svg" width="130" height="80" viewBox="0 0 1075.56483 723">   
     <rect x="618.01845" y="721" width="457.54639" height="2" fill="#3f3d56"/>
     <rect x="583.01845" y="692" width="457.54639" height="2" fill="#3f3d56"/>
     <rect x="438.01845" y="663" width="457.54639" height="2" fill="#3f3d56"/>