Resolve "Adicionar opção clean e opção fixture"

Created the fixture task and proper tests, also created dummie data to load on database

Created the clean task and proper tests

Closes #3 (closed)

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• 8a708f44 - Issue #3 (closed): Create clean task

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• 24a0cace - Issue #3 (closed): Create clean task

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• e12cedcc - Issue #3 (closed): Create fixture task
• ddfee5a6 - Issue #3 (closed): Create fixture task

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• 5e88d7a2 - Issue #3 (closed): Create clean and fixture tasks

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unmarked as a Work In Progress

assigned to @lfoliveira

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• a945a148 - Issue #3 (closed): Create clean and fixture tasks

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changed the description

mentioned in commit 519139f5

merged