Refactor Exceptions

In this merge request, the exceptions are refactored. This is done by creating an abstract EntityNotFound and EntityNotUniqueException from which the respective subclasses inherit. Moreover, the QuarterNotActiveException and CourseNotActive are merged into a PreferenceNotAllowedException.

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• 8f36006b - Refactor Exceptions

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By Max van Deursen on 2018-06-05T13:10:54 (imported from GitLab project)

added 1 commit

• 3f3d7fb6 - Refactor Exceptions

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By Max van Deursen on 2018-06-05T13:13:03 (imported from GitLab project)

marked as a Work In Progress

By Max van Deursen on 2018-06-05T13:28:46 (imported from GitLab project)

changed the description

By Max van Deursen on 2018-06-05T13:28:46 (imported from GitLab project)

added 3 commits

• 3f3d7fb6...4d16e9eb - 2 commits from branch dev
• d1e2774a - Refactor Exceptions

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By Max van Deursen on 2018-06-05T13:32:01 (imported from GitLab project)

unmarked as a Work In Progress

By Max van Deursen on 2018-06-05T13:32:08 (imported from GitLab project)

merged

By Max Pigmans on 2018-06-05T13:56:15 (imported from GitLab project)

mentioned in commit 0fcf098c

By Max Pigmans on 2018-06-05T13:56:15 (imported from GitLab project)