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
refactor of block editing

* switch to a registry that stores all block info, not just views
* add a getAll registry method to get all views with a given name
* show buttons for all block types in the layout toolbar
* show the block's modal edit form after it is added
* use this.context to simplify passing of callbacks in the layout components
* rename 'uuid' property of item block to 'item'
add search block type

* add a search block type
* refactor search component so it calls onFilter when a filter is clicked so a wrapper component can control navigation / updating state
* use the search component for editing the search block
* make the backend search view work even if no term or type entered
* fix fallback block edit form to use schema if specified
* prevent default click action on block add buttons
add 'picker' mode for search results

* always include the type facet in results from server, and hide it on client side when mode != picker
* show text input for searchTerm when mode == picker