[WIP][DD-854] try to make use of temporal indices
[WIP][DD-854] fixed indexing error
[WIP][DD-854] fixed indexing bug
[DD-854] code clean-up
[DD-854] code clean-up pt. 2
[DD-854] code clean-up pt. 3
[DD-854] fill db for full test cases backup
[DD-854] fill fixed data model type node creation
Merge pull request #4 from zazi/bugs/dd-854

[DD-854] unified index handling