Start implementation of input_files collection for workflow_run

Conflicts:
	seqware-common/src/main/java/net/sourceforge/seqware/common/model/WorkflowRun.java
	seqware-common/src/main/resources/net/sourceforge/seqware/common/model/Mappings.hbm.xml
	seqware-meta-db/1.0.1_to_1.0.2.sql
	seqware-webservice/src/test/java/net/sourceforge/seqware/common/metadata/MetadataWSTest.java
Change to use sw_accession, we can't constrain this in the DB

However, we don't want to expose file_id either

Conflicts:
	seqware-meta-db/src/main/resources/net/sourceforge/seqware/metadb/util/seqware_meta_db.sql
Initial tracking for input files
Saving work in progress on fix for multiple files attached to processing event
Fix cyclic graph error, extended tests for web resource