Installation fixes and refactoring

[AlvinSchiller]

• moved some logoutputs to be contained in logfile for better researchability
• refactored finish routine, seperated rfid setup
• removed "repace homedir" logic -> v2 will not be refactored to be used with a different user
• fix special char handling in install conf file through escaping
• harmonized install conf var writeout
• update testdata for special chars

[coveralls]

Pull Request Test Coverage Report for Build 8759564735

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 78.435%

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Totals
Change from base Build 8680810264:	0.0%
Covered Lines:	451
Relevant Lines:	575

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💛 - Coveralls

[AlvinSchiller]

The escaping for the wifi values also needs to be done from the WebApp.
This will be done in a different PR to be seperated from the installation changes.