[8.0] Port the module 'account_move_template' to the new API

This PR contains the module ***account_move_template*** ported to the new API.
Test and installation seems to me ok.

Let's see what will be the TravisCI response and your reviews :wink: 
> BTW the eval should probably be replaced by openerp.tools.safe_eval.safe_eval

@guewen one more thing.
Using ```safe_eval``` and running the test it I get the following error:

```
  File "/home/tafaru/dev/envs/buildout/odoo-8-dev/buildout_cfg/parts/odoo/openerp/api.py", line 235, in wrapper
    return new_api(self, *args, **kwargs)
  File "/home/tafaru/dev/envs/buildout/odoo-8-dev/buildout_cfg/parts/account-financial-tools/account_move_template/account_document_template.py", line 70, in lines
    line.python_code.replace('L', 'recurse_lines')
  File "/home/tafaru/dev/envs/buildout/odoo-8-dev/buildout_cfg/parts/odoo/openerp/tools/safe_eval.py", line 313, in safe_eval
    return eval(c, globals_dict, locals_dict)
  File "", line 1, in <module>
ValueError: "name 'recurse_lines' is not defined" while evaluating
u'recurse_lines(1)'
```

Any ideas how to fix it? Thanks!