Feature unit tests for store

[white-gecko]

Add Unit tests for the methods addMultiplesStatements and deleteMatchingStatements of the Erfurt_Store class.

This pull request should be merged after #123

[pfrischmuth]

• [x] manual review commits:
  • Typo in message signature should be fixed before merge FIXED
• [x] check unit tests:
  • develop Branch: Tests: 648, Assertions: 1294, Incomplete: 3, Skipped: 8.
  • Pull Request: Tests: 655, Assertions: 1319, Incomplete: 3, Skipped: 8.
  • Feature adds 7 new passing tests with 25 new assertions
• [x] check integration tests mysql:
  • develop Branch: Tests: 63, Assertions: 5834, Skipped: 7.
  • Pull Request:Tests: 63, Assertions: 5834, Skipped: 7.
• [x] check integration tests virtuoso:
  • develop Branch: Tests: 63, Assertions: 224, Skipped: 9.
  • Pull Request: Tests: 63, Assertions: 224, Skipped: 9.

[pfrischmuth]

OK