fix(compile): should not leak memory when there are top level empty text nodes

The change to prevent <span> elements being wrapped around empty text nodes caused these empty text nodes to have scopes and controllers attached, through jqLite.data() calls, which led to memory leaks and errors in IE8.
Now we exclude all but document nodes and elements from having jqLite.data() set both in the compiler and in ng-view.

Fixes: #1968 and #1876
fix(ngClass): keep track of old ngClass value manually

ngClassWatchAction, when called as a $watch function, gets the wrong old
value after it has been invoked previously due to observation of the
interpolated class attribute. As a result it doesn't remove classes
properly. Keeping track of the old value manually seems to fix this.

Closes #1637
fix($compile): sanitize values bound to a[href]
chore(matchers): fix hasBeenCalledOnceWith matcher

the error message was wrong and misleading
docs(changelog): add release notes for 1.0.5 and 1.1.3
chore(release): cut the 1.0.5 flatulent-propulsion release
docs(changelog): fix release notes
chore(release): start 1.0.6 universal-irreversibility iteration
fix($compile): handle elements with no childNodes property

see the test for more details
chore(nodeserver): fix log message for 301 response
fix($compile): whitelist file:// in url sanitization
docs(dateFilter): properly specify range for the Z format modifier

Closes #1533
docs(guide/directives): update obsolete doc reference

Replace an obsolete reference to a nonexistent "Creating Widgets"
section with a real link to "Creating Components".
chore(sortedHtml): print attributes with empty value

I had to also fix some tests as they started failing on IE8.

We should figure out why these extra attributes are set in IE8,
but I'm too tired of IE to worry about it now. Since I'm
not introducing this issue just making it visible, I'm going
to commit this as is.
fix($compile): compile replace directives in external template

Passing DOMNode#childNodes to compileNodes when compiling remote
template, so that directives with replace:true can be compiled.
The previous version used jqLite#contents which returned collection
that was not updated during the compilation.

Closes #1859
docs(ngMock): fix minor typo in comment

Change "constroctor" to "constructor".
fix($http): don't encode URL query substring "null" to "+"

Fixes issue in encodeUriQuery used by $http and $resource that
treats null as a string and replaces the characters "null" with "+".
chore(Grunt): switch from Rake to Grunt

Migrates the Angular project from Rake to Grunt.

Benefits:
- Drops Ruby dependency
- Lowers barrier to entry for contributions from JavaScript ninjas
- Simplifies the Angular project setup and build process
- Adopts industry-standard tools specific to JavaScript projects
- Support building angular.js on Windows platform (really?!? why?!?)

BREAKING CHANGE: Rake is completely replaced by Grunt. Below are the deprecated Rake tasks and their Grunt equivalents:

rake --> grunt
rake package --> grunt package
rake init --> N/A
rake clean --> grunt clean
rake concat_scenario --> grunt build:scenario
rake concat --> grunt build
rake concat_scenario --> grunt build:scenario
rake minify --> grunt minify
rake version --> grunt write:version
rake docs --> grunt docs
rake webserver --> grunt webserver
rake test --> grunt test
rake test:unit --> grunt test:unit
rake test:<jqlite|jquery|modules|e2e> --> grunt test:<jqlite|jquery|modules|end2end|e2e>
rake test[Firefox+Safari] --> grunt test --browsers Firefox,Safari
rake test[Safari] --> grunt test --browsers Safari
rake autotest --> grunt autotest

NOTES:
* For convenience grunt test:e2e starts a webserver for you, while grunt test:end2end doesn't.
  Use grunt test:end2end if you already have the webserver running.
* Removes duplicate entry for Describe.js in the angularScenario section of angularFiles.js
* Updates docs/src/gen-docs.js to use #done intead of the deprecated #end
* Uses grunt-contrib-connect instead of lib/nodeserver (removed)
* Removes nodeserver.sh, travis now uses grunt webserver
* Built and minified files are identical to Rake's output, with the exception of one less
  character for git revisions (using --short) and a couple minor whitespace differences

Closes #199

Conflicts:

	Rakefile
docs($http): add more info about transform function
chore(Grunt): don't remove root dir from zip