RavenDB-1637 JsonContent - when detecting browser, output nice text json
minor
RavenDB-1700 Fixing the order of freeing scratch pages: we have to free pages of unused journals first before the other journals because otherwise a read transaction could read an outdated page from the older and not relevant journal
Merge branch 'RavenDB-1700' of https://github.com/arekais/ravendb into New3