overrides: add table and grid log values

* closes inveniosoftware/invenio-jobs#67

Author: jrcastro2

invenio_theme/assets/semantic-ui/less/invenio_theme/theme/collections/grid.overrides

@@ -124,3 +124,8 @@
     }
   }
 }
+
+.log-table {
+    max-height: calc(100vh - 300px);
+    overflow-Y: auto;
+}

invenio_theme/assets/semantic-ui/less/invenio_theme/theme/collections/table.overrides

@@ -1,3 +1,16 @@
 /***********************************************
          Invenio Theme Table Overrides
 ***********************************************/
+
+@keyframes fadeIn {
+  from {
+    opacity: 0;
+  }
+  to {
+    opacity: 1;
+  }
+}
+
+.log-line {
+    animation: fadeIn 0.3s ease-in;
+}