Enhance settings in code repository

[hohwille]

This is a follow up story of #757:
In PR #850 there were some remaining discussions left:

• Missing .git folder in D:\projects\code-demo\settings. - can we prevent this warning since it is normal in this case?
• Should we skip git pull on the code repo on ide update? Or otherwise at least add an option like ide update --skip-pull? I would actually suggest to skip the pull but render a warning if the git repo is not up-to-date but let the user in control of pulling and potential conflict resolution. We could also honor --force flag to trigger the update so ide -f update would still do the git pull but fail in case of merge conflicts.