Introduce sampel provenance data models
admin form integration of Sample History
add provenanceType table to Index
switch sourceSample in SampleProvenance to selectable field and bugfix TabularInline
rename backwards relations for SampleProvenance
bugfix tabular inline for Attachments; readonly view of sample provenance
prevent making a sample source sample of itself
bugfix SampleProvenance unicode and cleanup
method to convert generic Sample instance into specific subClass instance
optimize sample history display and make sub-class specific sample links
cosmetics
add arrow images
cosmetics
Merge branch 'provenance'