Increase accepted length of version string

[softins]

Short description of changes

Increase length of accepted version number from 30 to 50 chars. This does not change any messages sent by Jamulus, only making it accept a longer string received as the version number.

CHANGELOG: Server/Client: Allow registration and display of longer version numbers.

Context: Fixes an issue?

Replaces #3655. If a build is made from a tree with uncommitted changes, the version string includes "-dirty", which pushes the length of the version number over 30, now that a numeric timestamp has been added. This change allows a directory and a client to correctly parse such a long version number without causing a server registration to fail or a client to fail to display the version number in the connect dialog.

Does this change need documentation? What needs to be documented and how?

No, bugfix only.

Status of this Pull Request

Ready

What is missing until this pull request can be merged?

Nothing

Checklist

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