doc(filter): remove invalid character
doc(guide/compiler): fix grammatical error

"The compilation process happens into two phases." should be "The compilation process happens in two phases."
docs(filters): fix minor typographical error

Fix a typographical error "it's" -> "its" in the dateFilter
documentation
feat($http): add support for aborting via timeout promises

If the timeout argument is a promise, abort the request when it is resolved.
Implemented by adding support to $httpBackend service and $httpBackend mock
service.

This api can also be used to explicitly abort requests while keeping the
communication between the deffered and promise unidirectional.

Closes #1159
chore(ngdocs): move angular-bootstrap.js to be generated only inside the docs and remove from the build process
fix(ngdocs): provide test code for syntax links in docs and fix the syntax directive for IE8
fix(ngdocs): fix gen_docs.sh