Add solr_page_size as a valid option for HABTM
Merge pull request #443 from projecthydra/solr_page_option

Add solr_page_size as a valid option for HABTM
Have DatastreamHash delegate to a Hash instead of descending from one
Replace ActiveFedora::Core#init_with with #init_with_object to avoid a respond_to? false positive in Psych
Don't override kind_of?