Flask-boost

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* Fix bugs when generating project in Windows.
* Exclude useless files from package.

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* Upgrade ``Flask-SQLAlchemy`` to 2.1.
* Upgrade ``PyMySQL`` to 0.6.7.
* Upgrade ``Pillow`` to 3.0.0.
* Upgrade ``six`` to 1.10.0.
* Upgrade ``raven`` to 5.8.1.
* Upgrade ``coverage`` to 4.0.1.

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* Remove ``Flask-Uploads`` to support Python 3.x.

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* Replace ``shutil.move`` with ``shutil.copy`` to avoid crash in Windows.
* Update doc.

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* Move page stuff to ``application/pages`` dir.
* Move macro stuff to ``application/macros`` dir.
* Use Gulp_ to build macro assets in development.
* Use FIS_ to build assets in production.
* Lock package version in ``requirements.txt``.

.. _Gulp: http://gulpjs.com
.. _FIS: http://fex-team.github.io/fis-site/

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* Freeze version of packages.
* Upgrade fontaswsome to 4.4.0.
* Add jsonify decorator.