create settings page, full timezone support

app/migrations/versions/d92ccc005d22_.py

@@ -1,8 +1,8 @@
 """empty message
 
-Revision ID: d4e71a6e9479
+Revision ID: d92ccc005d22
 Revises: bf65c9f77f9f
-Create Date: 2022-11-22 05:24:06.596342
+Create Date: 2022-11-23 20:32:41.868230
 
 """
 from alembic import op
@@ -10,7 +10,7 @@ import sqlalchemy as sa
 
 
 # revision identifiers, used by Alembic.
-revision = 'd4e71a6e9479'
+revision = 'd92ccc005d22'
 down_revision = 'bf65c9f77f9f'
 branch_labels = None
 depends_on = None
@@ -18,7 +18,7 @@ depends_on = None
 
 def upgrade():
     # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column('user', sa.Column('timezone', sa.String(length=20), nullable=True))
+    op.add_column('user', sa.Column('timezone', sa.String(length=20), nullable=True, server_default='UTC'))
     # ### end Alembic commands ###