Leading and trailing spaces should be stripped from the repository importer's URL field

Problem

When using the repository importer, if a URL contains a leading or trailing whitespace, the validation for the field fails with an unexpected error.

Expected Result

A git URL with leading or trailing spaces causes no validation errors.

Suggested Fix

One of:

• Leading and trailing spaces are stripped from the git URL; or
• Provide a better validation message suggesting the URL is invalid (if a trailing whitespace is required it should probably be percent-encoded).