WIP: Resolve "Einladungen zum Aushängen drucken"

Closes #179

migrations/versions/3b2e9b2b7579_.py

+"""empty message
+
+Revision ID: 3b2e9b2b7579
+Revises: b4ef355a6ccd
+Create Date: 2018-03-18 19:11:56.527186
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '3b2e9b2b7579'
+down_revision = 'b4ef355a6ccd'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('protocols', sa.Column('invitation_by', sa.String(), nullable=True))
+    op.add_column('protocoltypes', sa.Column('invitation_address', sa.String(), nullable=True))
+    op.add_column('protocoltypes', sa.Column('invitation_text', sa.String(), nullable=True))
+    op.add_column('protocoltypes', sa.Column('usual_invitation_by', sa.String(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('protocoltypes', 'usual_invitation_by')
+    op.drop_column('protocoltypes', 'invitation_text')
+    op.drop_column('protocoltypes', 'invitation_address')
+    op.drop_column('protocols', 'invitation_by')
+    # ### end Alembic commands ###