Rename account_analytic_*_line files

In previous commit 'account_analytic_*_line' model files
were renamed to temporary names.

This commit renames these files to correct names

contract/models/__init__.py

@@ -2,7 +2,7 @@
 
 from . import account_analytic_contract
 from . import account_analytic_account
-from . import account_analytic_invoice_line_bis
-from . import account_analytic_contract_line_bis
+from . import account_analytic_contract_line
+from . import account_analytic_invoice_line
 from . import account_invoice
 from . import res_partner