Added hints to shipment form view.
Simplified shipment index view.
Added delete in material types show and index views.
Add show-all/show-pending function in shipments. Modification to automatically fill in the ship date when you create the shipment.
Fix the views to match the other templates
Fix the ontology terms views to match the other templates. Added time unit measurements in the ontology terms.
Add ontology url in the taxon creation form.
Added age and collection time point fields in sample. Migrated. Added age time units as ontology terms. Connected the timem units with the sample model. Added validation for age. Added new fields in search.
Add external link model. A sample can have multiple external links. Added associations.
Added more fields in samples. Added some ontology terms as well. Fixed migrations, associations. Modified sample model.
Modified views for samples to add the new fields.
Modified the rake that loads the database, according to the new version of the spreadsheet (has new fields, modified the association with material types, changed the order of the attributes, etc)