Handle 'prehistory' release once and for all

Change-Id: Id488658b22030f131a751e07843ba8c00f575597
Signed-off-by: Pierre-Louis Bonicoli <pierre-louis.bonicoli@libregerbil.fr>

stackalytics/dashboard/vault.py

@@ -129,7 +129,7 @@ def get_runtime_storage():
 def _init_releases(vault):
     runtime_storage_inst = vault['runtime_storage']
     releases = runtime_storage_inst.get_by_key('releases')
-    releases_map = {}
+    releases_map = collections.OrderedDict()
 
     if releases:
         first_day = vault['memory_storage'].get_first_record_day()
@@ -189,15 +189,6 @@ def get_project_types():
     return get_vault()['project_types']
 
 
-def get_release_options():
-    runtime_storage_inst = get_runtime_storage()
-    releases = runtime_storage_inst.get_by_key('releases') or []
-    releases = [r for r in releases if r['release_name'] != 'prehistory']
-    releases.append({'release_name': 'all'})
-    releases.reverse()
-    return releases
-
-
 def is_project_type_valid(project_type):
     if not project_type:
         return False

stackalytics/dashboard/web.py

@@ -488,9 +488,12 @@ def get_user(user_id):
 @decorators.cached(ignore=parameters.FILTER_PARAMETERS)
 @decorators.jsonify(root=('data', 'default'))
 def get_releases_json(**kwargs):
-    return ([{'id': r['release_name'], 'text': r['release_name'].capitalize()}
-            for r in vault.get_release_options()],
-            parameters.get_default('release'))
+    releases = [{'id': release['release_name'],
+                 'text': release['release_name'].capitalize()}
+                for release in vault.get_vault()['releases'].values()]
+    releases.append({'id': 'all', 'text': 'All'})
+    releases.reverse()
+    return (releases, parameters.get_default('release'))
 
 
 @app.route('/api/1.0/metrics')