GUAC-963: Allow files with blobs to be saved. Style savable transfers differently.

guacamole/src/main/webapp/app/client/templates/guacFileTransfer.html

@@ -1,4 +1,4 @@
-<div class="transfer" ng-class="{'in-progress': isInProgress()}">
+<div class="transfer" ng-class="{'in-progress': isInProgress(), 'savable': isSavable()}" ng-click="save()">
     <!--
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