[FIX] correct retro-compatibility with 7.0 route()
[FIX] http: allow auth="none" routes to works without being logged in when in monodb.
[FIX] modules.loading: clear caches after test rollback, to avoid stale caches
[FIX] browse_record.__str__: avoid crashing when ID is None
[IMP] orm: log underlying exception at DEBUG level when a constraint check raises
[FIX] ir.ui.view: better error message upon missing model for non-qweb views, misc cleanup
[FIX] ir.ui.view: fix tests after refactoring of ir.ui.view/qweb view processing