This addresses #1051. There is one more pull request that needs to be completed/merged (for `CompositeTagHelperDescriptorResolver` and friends). After that, runtime should work!
* #4847 Fix MapAreaRoute override existing area constraint
Modify Test project
Modify web test routing
* wrong field tested
* IntRouteConstraint expected
* Default for area route on Travel area
* Removed commented code
simplify constraintsDictionary area assign
renamed test method
* test name
* renamedd test to MapAreaRoute_DoesNotReplaceValuesForAreaIfAlreadyPresentInConstraintsOrDefaults