Update Docs for Release 0.5.0

This MR aims to fulfill the second part of #255 (closed) and add necessary documentation.

TODOS:

• Install and execute Theodolite step by step as described in the READMEs

added 1 commit

• d6245282 - update docs

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changed milestone to %0.5.0

added 11 commits

• d6245282...141fc0e0 - 10 commits from branch she:master
• ab6d4216 - update docs

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added 1 commit

• 9643aa88 - Rework Helm Readme

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marked the checklist item Install and execute Theodolite step by step as described in the READMEs as completed

added 1 commit

• 7711e2ce - Update general Readme

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marked this merge request as ready

assigned to @she

enabled an automatic merge when the pipeline for 7711e2ce succeeds

merged

mentioned in commit 3f4cae08