Manual merge of Workflows_FeatureBranch into Master
Manual merge of Workflows_FeatureBranch into Master

Added Workflows and WorkflowMethodSequences tables, as discussed in
issue #6.  Also rearranged ODM2Core schema diagram to fit everything in
logical groups, with no foreign key lines that cross under another
table (by the way, DBwrench v3 allows FK connectors to be moved
mannually).

ODM2/ODM2ControlledVocabularies,ODM2/ODM2ControlledVocabularies,miguelcleon/ODM2