js-logic: trim input before adding.
Merge branch '_dev/trim-input' into dev
bower: add dependencies.
dropdown: add a dropdown to select values from.
style: style the dropdown.
js logic: filter the given choices.
Merge branch '_dev/choices' into dev
core-menu: select the first item when choices are reset.
key handling: tab key inserts the selected item.
key handling: up/down arrow changes the selected item.
Merge branch '_dev/core-menu-selection' into dev