toaster: fixes after refactoring

toaster: fixes after refactoring

This patch fixes issues brought in by refactoring:

* the New Build button is working with pre-set projects
* the xhr_datatypeahead is exposed for calls that are not
mapable to the REST objects
* a new table returing recipes provided by layers currently
selected in the project is used to provide recipe suggestions
* the field names in json are switched from "list" to "rows" as
to maintain consistency with the ToasterTables
* the "value" field in xhr_ calls is now named "search" to maintain
consistency

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>