Update mixins.json

Removing BTO and AMAD from the reg-ex for biosample_term_id
Update biosample.json
Update biosample.json

Removing BTO from the test set
Update experiment.json

Removing BTO from the test data
Initial implementation.
Fix sticky-header problem; fix styles for IE.
Merging in master.
Merging in master.
Change promoter property name in construct as per lab request
Merge pull request #298 from ENCODE-DCC/1516-No_more_BTO

1516 no more bto
Merge branch 'master' of https://github.com/ENCODE-DCC/encoded
Property name change in construct test insert
Merging in master.
Merge pull request #299 from ENCODE-DCC/479-test-label

479 test label
Merging in master.