Feature/#74 tile

Feature

Summary

This MR provides

• a new endpoint for getting image sections
• a mechanism that distinguishes whether a manifest has double pages or single pages and delivers the correct URL

Compliance to “Definition of Done”

• Unit tests passed
• Code reviewed
• Acceptance criteria met
• Functional tests passed
• Non-Functional requirements met
• Product Owner accepts the User Story

Documentation

• I updated the README (if applicable)
• I provided my functions with appropriate documentation
• I updated existing documentation

Tests

Are we able to test this new feature?

• Yes, everything can be done via unit tests.

Changelog

• I added a statement to the CHANGELOG.

Version number

• I bumped the version number in build.properties.

Related Tickets

Closes

Closes #74 (closed).

Logs and Screenshots

/cc Mathias Göbel, Frank Schneider, Michelle Weidling