[feat] change packages bundled with existdb

- remove **markdown** and **shared** package
  there is no longer a bundle app that depends on it
- add new dependency to **templating** library module used by most of
  the bundled application packages

Author: windauer

exist-distribution/pom.xml

@@ -670,17 +670,14 @@
                                 <package>
                                     <abbrev>monex</abbrev>
                                 </package>
-                                <package>
-                                    <abbrev>markdown</abbrev>
-                                </package>
                                 <package>
                                     <abbrev>packageservice</abbrev>
                                 </package>
                                 <package>
                                     <abbrev>semver-xq</abbrev>
                                 </package>
                                 <package>
-                                    <abbrev>shared</abbrev>
+                                    <abbrev>templating</abbrev>
                                 </package>
                             </packages>
                         </configuration>