(core) Simple localization support and currency selector.

Summary:
- Grist document has a associated "locale" setting that affects how currency is formatted.
- Currency selector for number format.

Test Plan: not done

Reviewers: dsagal

Reviewed By: dsagal

Subscribers: paulfitz

Differential Revision: https://phab.getgrist.com/D2977

sandbox/grist/migrations.py

@@ -788,3 +788,10 @@ def migration22(tdset):
     add_column('_grist_Tables_column', 'recalcWhen', 'Int'),
     add_column('_grist_Tables_column', 'recalcDeps', 'RefList:_grist_Tables_column'),
   ])
+
+@migration(schema_version=23)
+def migration23(tdset):
+  return tdset.apply_doc_actions([
+    add_column('_grist_DocInfo', 'documentSettings', 'Text'),
+    actions.UpdateRecord('_grist_DocInfo', 1, {'documentSettings': '{"locale":"en-US"}'})
+  ])

sandbox/grist/schema.py

@@ -15,7 +15,7 @@ import six
 
 import actions
 
-SCHEMA_VERSION = 22
+SCHEMA_VERSION = 23
 
 def make_column(col_id, col_type, formula='', isFormula=False):
   return {
@@ -40,6 +40,9 @@ def schema_create_actions():
 
       # Document timezone.
       make_column("timezone", "Text"),
+
+      # Document settings (excluding timezone).
+      make_column("documentSettings", "Text"), # JSON string describing document settings
     ]),
 
     # The names of the user tables. This does NOT include built-in tables.

sandbox/grist/useractions.py

@@ -193,13 +193,14 @@ class UserActions(object):
   #----------------------------------------
 
   @useraction
-  def InitNewDoc(self, timezone):
+  def InitNewDoc(self, timezone, locale):
     creation_actions = schema.schema_create_actions()
     self._engine.out_actions.stored.extend(creation_actions)
     self._engine.out_actions.direct += [True] * len(creation_actions)
     self._do_doc_action(actions.AddRecord("_grist_DocInfo", 1,
                                           {'schemaVersion': schema.SCHEMA_VERSION,
-                                           'timezone': timezone}))
+                                           'timezone': timezone,
+                                           'documentSettings': json.dumps({'locale': locale})}))
 
     # Set up initial ACL data.
     # NOTE The special records below are not actually used. They were intended for obsolete ACL