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Generate correct parse of forum page for download URLs.
Dropbox
 - fixed valid URL check
 - simplified download link parse with HTMLAgility
Revert "Generate correct parse of forum page for download URLs."

This reverts commit af368e0d51ed1d2b517bbf54f03e5cd676ae6e1d.
Merge branch 'dev' of https://github.com/MacTee/KSP-Mod-Admin-aOS into GitHubMultilinks
Merge pull request #30 from Gribbleshnibit8/GitHubMultilinks

GitHub multilinks