add contract models and register this models admin panel

core/apps/contracts/enums/contract.py

@@ -0,0 +1,12 @@
+SIDES = (
+    ('two_or_more', 'two or more',),
+    ('customer_only', 'customer only',),
+    ('only_company', 'onlycompany'),
+)
+
+STATUS = (
+    ('created', 'created',),
+    ('signed_company', 'signed by company',),
+    ('signed_customer', 'signed by customer',),
+    ('cancelled', 'cancelled')
+)

core/apps/contracts/enums/contract_file.py

@@ -0,0 +1,12 @@
+FILE_TYPE = (
+    ('all_files', 'all files',),
+    ('PDF', 'pdf',),
+    ('word_files', 'word files',),
+    ('image', 'image'),
+)
+
+USER_PERMISSION = (
+    ('all', 'all'),
+    ('add', 'add'),
+    ('delete', 'delete'),
+)

core/apps/contracts/enums/contract_notification.py

@@ -0,0 +1,15 @@
+NOTIFICATION_EVENT = (
+    ('exact_date', 'exact date'),
+    ('counterparty_signing', 'counterparty signing'),
+    ('signature_all_parties', 'Signature of all parties')
+)
+
+TYPE_NOTIFICATION = (
+    ('sms', 'sms'),
+    ('whatsup', 'whatsup'),
+)
+
+TYPE_MESSAGE = (
+    ('krill', 'krill'),
+    ('latin', 'latin'),
+)

core/apps/contracts/enums/contract_side.py

@@ -0,0 +1,4 @@
+ROLE = (
+    ('physical', 'physical'),
+    ('legal', 'legal'),
+)

core/apps/contracts/enums/contract_signature.py

@@ -0,0 +1,9 @@
+SIGNATURE_STATUS = (
+    ('signed', 'signed'),
+    ('organized', 'organized')
+)
+
+SIGNATURE_TYPE = (
+    ('sms_sign', 'sms signature'),
+    ('electronic_sing', 'electronic signature')
+)