Add terms of service acceptance date to user table (#1046)

* add tos_acceptance_date column to user

* send 451 UNAVAILABLE_FOR_LEGAL_REASONS status

* add create user REST endpoint

* adapt text-frontend to ToS requirements

* set DEBUG_IGNORE_TOS_ACCEPTANCE default to True (temporary change)

* update down revision to f60958968ff8

backend/alembic/versions/2023_02_01_0022-55361f323d12_add_tos_acceptance_date_to_user.py

@@ -0,0 +1,34 @@
+"""add tos_acceptance_date to user
+
+Revision ID: 55361f323d12
+Revises: 7b8f0011e0b0
+Create Date: 2023-02-01 00:22:08.280251
+
+"""
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = "55361f323d12"
+down_revision = "f60958968ff8"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column("user", sa.Column("tos_acceptance_date", sa.DateTime(timezone=True), nullable=True))
+    op.drop_column("user_stats", "streak_days")
+    op.drop_column("user_stats", "streak_last_day_date")
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column(
+        "user_stats", sa.Column("streak_last_day_date", postgresql.TIMESTAMP(), autoincrement=False, nullable=True)
+    )
+    op.add_column("user_stats", sa.Column("streak_days", sa.INTEGER(), autoincrement=False, nullable=True))
+    op.drop_column("user", "tos_acceptance_date")
+    # ### end Alembic commands ###