Lovely-pyrest

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- removed error views from package

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- fixed documentation setup

- removed unused error view

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- updated documentation and added first example

- moved content of testing/tests.py to lovely/pyrest/tests.py

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- updated documentation for sphinx directive

- fixed optional positional arguments in sphinx directive

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- added sphinx option for pyramid_config path. With this option set
url prefixes are rendered correctly and it's not necessary to specify
a module in service directive

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- bugfix: prevent duplicate rendering of methods in autodoc