Using sqlLoader to put SQL out of Java code.
Batch operation not needed for just one execution of the prepared statement.
Connection and transaction are managed somewhere else.
Clearing variables between entry elements (not doing it resulted in many additional and wrong cross references).
Documentation.
Deprecated unused classes.
DB schema documentation.
Updated ep-util version to final.
Merge branch 'mm4chembl'
Removed Ignore annotations from tests, except for the one which relies on ChEBI data and WS availability.