added grammer library
added starting search library
added grammer to front-end dependencies
added grammer to angular app module
updated environment factory
added environment controller grammer updates
updated environment controller specs
updated grammer and moved dep to bower
update controller and spec
updated file structure to specified file class on server.
added new file class and added allfiles to scope. fixes #47.
removed selectedFile from environment and added allFiles. fixes #48.
refactored visualize and download graph events to accept file parameter. fixes #49. fixes #50.
refactored search to match term results as a file dataset filter. fixes #51.
added file params to visualize and download graph emitters. fixes #52.
added tsv only download
Added search interface to directives.
Updated about section.
cleaned environment interface and layout.
updated some css