modified query strings for changes in tables and added insert for citation table
added file prefix for dumping the citation table insert
added generating of Id and reference ID as a pair for the citation.  the category had been using the same ID sequence as keywords, so made it separate
changed addmethods for changes in the database tables and added the dumping of the citation table
class added so the ID generator could pass the citation ID for a citing-cited article pair and the reference count within that pair as an object and could use it in the hashmaps for tracking citations added.  Made a separate class instead of a protected class because the project is composed of multiple packages
added the citation file and comments as to what each file represents
added the handling of the citation and citation context as separate files.  Added the id_type as a parameter where the pubmed id is used in the PK so we can handle pubmed IDs, PMC IDs, DOIs and possibly other ID types
new jar added for Trevor with the code changes made today