Features/#820 emob mit sanity checks

[nesnoj]

Closes #820

Requires merge of #922

Before merging into dev-branch, please make sure that

• the CHANGELOG.rst was updated.
• new and adjusted code is formated using black and isort.
• the Dataset-version is updated when existing datasets are adjusted.
• the branch was merged into the
  continuous-integration/run-everything-over-the-weekend-branch.
• the workflow is running successful in test mode.
• the workflow is running successful in Everything mode.

[nesnoj]

Codacy fails: https://app.codacy.com/gh/openego/eGon-data/pullRequest?prid=10050119
While I can fix the Too many local variables issues, the other two:

• Value 'ts' is unsubscriptable (unsubscriptable-object)
• Lambda may not be necessary (unnecessary-lambda)

are simply not true. Seems that pylint fails at code analysis (there're quite some bug reports on false positives of e.g. unsubscriptable-object). So I tried to suppress them in 28ae5d6 but suppressing seems to be disabled by default and I reverted the suppression. Now I tend to just don't care anymore (following #56). @gnn please drop me a line if you have objections.