fix($location): parse query string when path is empty in hashbang mode

Before this fix, search queries in hashbang mode were ignored if the hash was not present in the
url. This patch corrects this by ensuring that the search query is available to be parsed by
urlResolve when the hashbang is not present.

Closes #5964
chore(examples): remove final traces of examples from the tree

Apparently some example files were referenced in angularFiles.js, and this was missed when
2f4513339337bb8aa6c9dfe1191d169b4fc57999 was checked in. This cleans it up.

Closes #6405
chore(travis): reorganize protractor configs to group by spec instead of by browser

Use the multiConfiguration ability of Protractor to start tests on multiple browsers
from the same travis cell. Group tests by type (jquery, jqlite, or docs tests) instead
of by browser. Turn on tests for jQuery.
perf($cacheFactory): skip LRU bookkeeping for caches with unbound capacity

Fixes #6193
Closes #6226
chore(doc-app): ensure only canonical paths get sent to Google Analytics

Before we were simply sending the current location, but multiple URLs map
to the same document.
Now, we use the canonical path of the current document if available and
fall back to the $location path otherwise.
Includes tests!!

Closes #6402
chore(docs-app): re-activate docs-app test tasks

Currently there is only a minimal test spec in place. But this will now
be run as part of the test tasks.
chore(protractor-jenkins-config): don't use `this` inside onPrepare

Closes #6406
docs($animate): change @param to use valid types

`{jQuery/jqLite element}` is not a valid jsdoc type and breaks when being
parsed causing the documentation to look wrong.  This commit changes all
such param tags to use `DOMElement` instead, which is what is used for
similar params in `$compile` and `angular.element`.
docs(ngPluralize): corrected "bounded to" to "bound to"

Closes #6408
style(tests): remove trailing comma in specs

Closes #6241
docs(guide): grammar fix

use of the article, both definite and indefinite, is not optional

Closes #5981
docs($routeProvider): correct "slashs" to "slashes"

Closes #6415
docs(tutorial): referenced e2e-test.bat for Windows users in step 3

Closes #5755
docs($interpolate) fix sample code appearing unformatted

Closes #6418
chore(core): introduce a wrapper for requestAnimationFrame
chore(core): create a wrapper to manage async callbacks
perf($animate): use rAF instead of timeouts to issue animation callbacks
docs(guide/concepts): reference correct module name.

Fixed a mistake, changed invoice to invoice2.

Closes #6438
chore(docs/contribute): add note about serving the docs
docs($cacheFactory): document cache instance methods

These were apparently entirely undocumented. I'm not sure if they're intended
to be private, but in case they're not, I've written some initial docs for them