fixed html template indent to 2 space
Change database models.

LandlordRentProfile -- 收房租第一表单
LandlordRenterInfo  -- 收房租第二表单（增加租客）
RenterRentProfile  -- 付房租第一表单
RenterOption       -- 付房租第二表单
Fix some bug since database models changed.
Add message model, and bankcard model.
Add colume 'confirm' into renter_info table.
Filling detail url into charge_rent, pay_rent.

Expand url for the two main action. Also add new view module for them.
Fix the url name in template '_base.html'.
Remove deprecated code in views.base
Passing callable object rather then string in url
Revert "Passing callable object rather then string in url"

This reverts commit 9befdfe6dc15e0747a4efe775f1e97c8b8563abe.
Change html template to based on bootstrap.

It looks better now ^_^.
完成基本手房租流程。

TODO: 实现流程内部逻辑：数据库处理等。
Replace argument 'req' with 'request'.
Make formbox looks better.
Rename check_authentication to require_auth.

It's shortter and more readable I think. :)
Add model ability to convert to a dict.
Implement basic Charge rent update logic.
Add update_from_dict into database models.
Implement basic create rent, update rent database logic.
Add i18n support in portal.
Add i18n support for model fields name.