Fix Request.Status.toString causing 500 errors for filters

• Filters seem to crash because the toString method for the NOTFOUND status contained a whitespace.
• The name of the toString() function was changed to displayName() to use the no longer use as the default for serialization.

added 2 commits

• ce460c2f - Fix for not-found status not being displayed immediately in the request
• 5da11cd2 - Merge branch...

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mentioned in commit 9b977fb4

mentioned in commit 6ce7edff