Feature/#339 dp pre processing locally

[gplssm]

fix #339 fix #324

Things done/ not done

Update on 10.04.2020. Listing data sets/ parts of the DP preprocessing that are already automatized for local runs If docs issue is mentioned in parentheses, it means, these aren't complete.

• [x] scenario_log
• [x] openstreetmap
• [x] zensus
• [x] vg250
• [x] zensus_vg250 (joining part)
• [x] cosmoclmgrid (docs: #333)
• [x] wind_potential_area (docs: #347)
• [ ] supply_powerplant (docs: #335)
• [x] slp
• [x] osmTGmod /otg (docs: #343)
• [ ] demand federalstate (docs: #344)
• [ ] destatis gva (docs: #344)
• [ ] renpassG!S (docs: #345)
• [ ] storage h2 areas (docs: #346) due to copyright restrictions, we won't have the original data set in our data base anymore. Instead we only process it locally during data processing #361

[gplssm]

On the 26th we decided not to complete this task for every dataset. Above unticked datasets are omitted. Still, the changes in the PR are valuable and can be merged to dev

[IlkaCu]

@gplssm: How to we proceed with the merging conflict in setup.py? I guess this occurs due to PR #362 which changed setup.py and was merged recently.