Remove unused myspell jar and fix classloading issue

[spbolton]

The myspell dependency is no longer used, although one of its internal utils classes has been added to a couple of our classes. The repackaged myspell jar also included a version of ant that was not renamed and being relied upon for compiling DotSQLGeneratorTask and TexenTask that extends org.apache.tools.ant.Task. Adding ant to the war can cause issues which were exposed in a later cdi change in the pipeline. Tomcat includes its own catalina-ant.jar in its classpath that is used by jasper the JSP engine. Including ant can create a ClassNotFound exception. Ant is required for compilation therefore, we add ant back in but with compileOnly.

l If TexenTask and DotSQLGeneratorTask are not longer used they could be removed and the ant dependency with it.