(css) Various adjustments

UI/WebServerResources/scss/components/input/input.scss

@@ -12,6 +12,10 @@ md-input-container {
   &.md-no-flex {
     flex: none !important;
   }
+  .md-errors-spacer {
+    // Temporary fix for https://github.com/angular/material/issues/6214
+    min-height: 0 !important;
+  }
 }
 
 md-input-container .bgroup {

UI/WebServerResources/scss/components/list/list.scss

@@ -48,6 +48,10 @@ md-list-item {
 }
 
 .md-sidenav-left {
+  md-list {
+    padding: 0;
+  }
+
   // Remove padding of input fields in the sidenav for better transitions between read and edit mode of a folder
   md-input-container {
     margin: 0;

UI/WebServerResources/scss/components/sidenav/sidenav.scss

@@ -18,6 +18,10 @@ md-sidenav {
   }
 }
 
+md-sidenav {
+  overflow: inherit;
+}
+
 // MAIN SIDENAV, actually to the left
 // ----------------------------------------------------------------------------