allow hypens in the default input box validation
allow hypens in the default input box validation

Closes issue #44

evernote/graphite-web,evernote/graphite-web,Talkdesk/graphite-web,Krylon360/evernote-graphite-web,Krylon360/evernote-graphite-web,evernote/graphite-web,Krylon360/evernote-graphite-web,Talkdesk/graphite-web,Krylon360/evernote-graphite-web,Talkdesk/graphite-web,Krylon360/evernote-graphite-web,Talkdesk/graphite-web,evernote/graphite-web,Talkdesk/graphite-web,evernote/graphite-web,Talkdesk/graphite-web,Krylon360/evernote-graphite-web