Improve info text for measurement registration

[oquendoM]

What happened?

The text in the measurement registration needs an update. =D We don't need to save in that format anymore.

What browsers are you seeing the problem on?

No response

Relevant log output

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[Shraddha0903]

@oquendoM The info message is for the users who would upload a .txt file (still a supported file format for measurements). @sven1103 The question here would be - is uploading a .txt for measurement registration still a use case? Do we still need it? For sample registration we only support excel files.

[sven1103]

It is still working and supported, thus the note is correct :) Removing the support within the 1.x.x version history would be a breaking change (violation of semantic versioning), thus I vote for leaving it as it is.

[oquendoM]

Maybe then the text can be adapted? The way it is it sounds like it is mandatory to convert the excel file.

[sven1103]

something like: in case you want to upload a tab-separated file ... ? @oquendoM