chore(travis): use saucelabs for chrome and firefox tests
chore(travis): fixed tunnel used by Karma on Saucelabs
Revert "feat(Scope): Instrument Scope to use User tags in Dart Obervatory"

This is only reverted because it is not ready for g3v1x.
We will re-apply this when we have the 'ok' to merge it into g3v1x.

This reverts commit c21ac7eaec3fd15bba7a124fdfb3e9680092a0f2.

Conflicts:
	lib/core/scope.dart
perf(view factory): 14% Precompute linking information for nodes

The Default TreeComponent benchmark dropped from 572ms to 501ms

Closes #1194
Closes #1196
chore(travis): increase max-duration to address sauce timeout on FF test
chore(docs): remove rm for old doc files. automating this is a bad idea.
fix(parser): ensure only one instance of dynamic parser
chore(npm): Pin jasmine-reporters version (2.0.0 breaks us)
fix(registry_dynamic): Do not use HashMaps.

I saw failures due to these HashMaps in some apps but don't have a
test case in Angular for this failure yet.
feat(http): support coalescing http requests

To enable this, configure the HttpConfig module with a coalescing
duration.  Doing so will enable all HTTP responses that arrive within
that interval to all be processed in a single digest.  Typically, this
is most helpful if you have many XHRs that are all going to be satisfied
by cached responses causing them to happen in quick succession.

e.g. Use something like this to configure a 50ms interval.

    bind(HttpConfig, toValue: new HttpConfig(
        coalesceDuration: new Duration(milliseconds: 50)));