Generate uniform CSS font size conf opts page
ConfigOption documentation changes

* Expanded and updated someConfigOption description strings in
  GraphDatabaseConfiguration

* Modified ConfigurationPrinter to preload ConfigOptions in the
  classpath via reflections before iterating over the config object
  tree; extracted this logic into a helper class now that it is used
  in two places (ConfigurationPrinter and TitanFactory)

* Added PreInitializeConfigOptions to some classes in the
  storage/index backends

* Tweaked the AsciiDoc->DocBook stylesheet to break extremely long
  single-word default value strings instead of making the table run
  off the right side of the screen