knockout: fixed tests/knockout-tests.ts to align with TS 0.9.5
Fixed SignalR tests
rx.js: fixed rx.js.time.d.ts errors related to switch on TS 0.9.5; some over minor fixes
angularjs: fixed errors in angular-tests.ts related to switch on TS 0.9.5
async: fixed errors in async-tests.ts related to switch on TS 0.9.5
Merge pull request #1392 from Igorbek/switch-0.9.5

Switch 0.9.5: fixes in knockout, signalr, rx.js, angularjs, async