diff -r a2342f26c9de -r b0b56e0f8c7f server/bo_client/app/services/constants.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/server/bo_client/app/services/constants.js	Fri Jan 15 15:35:00 2016 +0100
@@ -0,0 +1,42 @@
+import Ember from 'ember';
+
+const OLAC_ROLES = {
+  'http://www.language-archives.org/OLAC/1.1/annotator': 'bo.olac_role_annotator',
+  'http://www.language-archives.org/OLAC/1.1/author': 'bo.olac_role_author',
+  'http://www.language-archives.org/OLAC/1.1/compiler': 'bo.olac_role_compiler',
+  'http://www.language-archives.org/OLAC/1.1/consultant': 'bo.olac_role_consultant',
+  'http://www.language-archives.org/OLAC/1.1/data_inputter': 'bo.olac_role_data_inputter',
+  'http://www.language-archives.org/OLAC/1.1/depositor': 'bo.olac_role_depositor',
+  'http://www.language-archives.org/OLAC/1.1/developer': 'bo.olac_role_developer',
+  'http://www.language-archives.org/OLAC/1.1/editor': 'bo.olac_role_editor',
+  'http://www.language-archives.org/OLAC/1.1/illustrator': 'bo.olac_role_illustrator',
+  'http://www.language-archives.org/OLAC/1.1/interpreter': 'bo.olac_role_interpreter',
+  'http://www.language-archives.org/OLAC/1.1/interviewer': 'bo.olac_role_interviewer',
+  'http://www.language-archives.org/OLAC/1.1/participant': 'bo.olac_role_participant',
+  'http://www.language-archives.org/OLAC/1.1/performer': 'bo.olac_role_performer',
+  'http://www.language-archives.org/OLAC/1.1/photographer': 'bo.olac_role_photographer',
+  'http://www.language-archives.org/OLAC/1.1/recorder': 'bo.olac_role_recorder',
+  'http://www.language-archives.org/OLAC/1.1/researcher': 'bo.olac_role_researcher',
+  'http://www.language-archives.org/OLAC/1.1/research_participant': 'bo.olac_role_research_participant',
+  'http://www.language-archives.org/OLAC/1.1/responder': 'bo.olac_role_responder',
+  'http://www.language-archives.org/OLAC/1.1/signer': 'bo.olac_role_signer',
+  'http://www.language-archives.org/OLAC/1.1/singer': 'bo.olac_role_singer',
+  'http://www.language-archives.org/OLAC/1.1/speaker': 'bo.olac_role_speaker',
+  'http://www.language-archives.org/OLAC/1.1/sponsor': 'bo.olac_role_sponsor',
+  'http://www.language-archives.org/OLAC/1.1/transcriber': 'bo.olac_role_transcriber',
+  'http://www.language-archives.org/OLAC/1.1/translator': 'bo.olac_role_translator',
+};
+
+const KEY_CODES = {
+  BACKSPACE : 8,
+  DELETE : 46,
+  ESCAPE: 27,
+  RETURN: 13,
+};
+
+export default Ember.Service.extend({
+  OLAC_ROLES: OLAC_ROLES,
+  KEY_CODES: KEY_CODES,
+  VIAF_BASE_URL: "http://viaf.org/viaf/",
+  LEXVO_BASE_URL: "http://lexvo.org/id/iso639-3/",
+});