[OPENENGSB-3606] added function to load a model from a specific timestamp to the EngineeringDatabaseService
[OPENENGSB-3606] adapted the EDBConverter to load the correct version of sub models. Adapted test setups.
[OPENENGSB-3606] added integration test for testing the correct behaviour
Merge pull request #832 from Arcticwolf/OPENENGSB-3606

[OPENENGSB-3606] load submodels in correct version
[OPENENGSB-3607] Using batch operation to retrieve oeb boostrap deps
[OPENENGSB-3607] remove ~.m2/repository folder first
[OpenEngSB-3607] Corrected formatting of travis configuration
[OPENENGSB-3607] Make sure that no full install is done on install
[OPENENGSB-3603] added tests to EDBConverterTest and EDBIT for cascading models
[OPENENGSB-3603] fixed related checkstyle errors
[OPENENGSB-3603] fixed mocking according to OPENENGSB-3606