Addons: ConceptMapper improvements

In the addons, improve and release ConceptMapper.  
Improvements:

• allow inputs to be from Jar resources as well as file system files
• put the needed xml descriptor files in the built Jar, for better packaging as one artifact.
• fix read and write of compiled dictionary to use buffered I/O (greatly speeds up the load)
• update the build so this project can be released independently of all the other add-ons
  • parent pom : switch to uima-wide parent pom 11
• use conventional name for Jar (drop uima-an-conceptmapper as name)
• fix javadocs causing errors with Java 8 javadoc
• update docs as needed