Add first test for the nutrition application

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Move the German specific datepicker settings to the main template

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Update test suite

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Add a (simple and ugly) favicon

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Show the page title on the wide template too

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Fix format according to pep8

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Add more tests for the ingredient model

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Remove duble page title, this is done on the base template now

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Add first version of test case for nutritional plans

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Add test cases for meals

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Set correct test users

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Merge

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