Redmine#6063: add 0-9 A-Z _ to allowed context of module protocol
replace tab by spaces
Merge pull request #1747 from basvandervlies/fix_changelog_tab

replace tab by spaces
Fix misspell in change log.
Revert "Redmine#6063: add 0-9 A-Z _ to allowed context of module protocol"

This reverts commit ec62d6798ede560f496f9073c6d82ff72b1ec3cb.
Merge pull request #1749 from maciejmrowiec/master

Fix misspell in change log.