Fixes #405 - stops non-repo from showing up in explorer

Replaces spawn-rx with homegrown (stolen) implementation
Removes telemetry for now (until I get an azure account again)
Removes unused lodash modules
Removes unused testing dependencies

Adds some startup performance timings

Fixes newly detected typescript errors

Disables zone.js monkey patching by application insights

Fixes lint issues

appinsights seems to monkey patch even if explicitly disabled, so instead just only load it if needed