Add internationalization support

[gouthambs]

No description provided.

[slippers]

here is some research on this issue.

pybabel extends the python gettext module.
Flask-Babel extends this functionality into flask.

how it works:

add flask_babel to your app. then wrap the strings into a babel function call. finally run the pybabel to scan your app and create translation files.

areas of change for flask_blogging

• views.py has some translatable strings in flash messages
• static strings in the templates. this may be automatically gathered.
• datetime stamps

what it will not do

• translate the blog post.

other

what happens when flask_babel is applied multiple times to the app object. if flask_blogging is part of a larger web application that is already registering flask_babel then would there be an issue? maybe create a set of proxy functions that would call into babel if it is loaded on the app.