Pyshop

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- Fix mirroring of external links browsed (in case it's not a package)

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- Fix packaging

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- Fix tests for python 2.6 (unittest2 required and be installed manually)
- Fix pyramid 1.2 compatibility
- Rename command pyshop_install to python_setup
- Give the possibility to use the prefix_route via the settings 'pyshop.prefix_route'
- Give the possibility to disable xmlrpc servive via 'pyshop.enable_xmlrpc'

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- Tolerant underscore/hyphen usage in package name
- Tolerant with trailing slash in urls

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- Fix unit tests

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- add key "pyshop.mirror.cache.ttl" in config file.
This settings allow to set the cache time of a package
before refresh it on pypi.
- add a button in the web interface to force the refresh of mirrored package.
This permit to force reset the ttl of a package on the web interface.
- add key "pyshop.upload.rewrite_filename" in config file.
This settings disable the rename of package file uploaded on the server.
- change "satanize" to "sanitize" keys in config file.
Modify this settings in your config file after a migration.
- add key "pyshop.mirror.wheelify" in config file.
This settings require users to use recent version of pip and setuptools
virtualenv 1.10.1 is OK. This is experimental.
User and Proxy Server must run the same OS on the same architecture to
use that feature.