Hotfix/validation

[shyambhongle]

Fixes #

Changes in this pull request:
Validation fixes
Intervention preview fix

[norbertschuler]

I tested the possible entry of "," instead of "." and it seems to work well for single or multiple trees as well as for editing the values afterwards. I have not tested the other changes.
(btw. I still cannot build the iOS app for the same error as before error: unsupported option '-G' for target 'arm64-apple-ios13.4' (in target 'RNZipArchive' from project 'Pods'))

[shyambhongle]

Hi,
The build issue is fixed in the latest version of the zip package, but it requires setting the minimum deployment version to 15.5. Since we are using Expo and the iOS/Android folders are created dynamically, I will need to write a plugin to handle this.
I am currently making the necessary changes in this branch. I think It's better to merge the branch as writing plugin can take some time.

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
2 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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