GUACAMOLE-724: Switch to SVG versions of all PNG images.

pom.xml

@@ -103,6 +103,7 @@
                                 <exclude>.ratignore</exclude>
                                 <exclude>**/*.md</exclude>
                                 <exclude>**/*.json</exclude>
+                                <exclude>**/*.svg</exclude>
                                 <exclude>**/node_modules/**/*</exclude>
                                 <exclude>**/templates/*.html</exclude>
                                 <exclude>src/licenses/**/*</exclude>