add search icons
update download tsv to be a button, add some padding
Minor tweak to consistency of source and gene, drug, interaction claim views
Minor tweaks to api documentation
move interaction request validation back to application controller
Fix display problem with arangement of blocks in druggable gene categories view occuring on large monitors
Cleanup Perl API example, minor edits to API documentation
Typo fixes, etc. in API docs
Add tour content to reflect addition of source trust level filters
Add heading to abstract text and improve description of Similarly Named Drugs block
add display_name to source types
Merge branch 'master' of https://github.com/genome/dgi-db
merging with  master
gene list data-name attribute now contains the new gene claim source display_name property
merging