Add a basic library_schemas test set
Add nucleic_acid_starting_quanitity_units and test data
Merge remote-tracking branch 'origin/master' into 1394-nucleic_acid_starting_amount_units
Removed the dependancy code since we already have data with no units
Removed the inappropriate merge of library_type
Merge remote-tracking branch 'origin/master' into 1394-nucleic_acid_starting_amount_units
Merge pull request #241 from ENCODE-DCC/1394-nucleic_acid_starting_amount_units

1394 nucleic acid starting amount units
Merge from master; no conflicts.
Minor style changes, mostly to make tables more closely match existing table styles.
Minor fixes for iOS styling.