chore(package.json): use `devDependencies` instead of `dependencies`
chore(package.json): kill version.yaml in favor of package.json

all versioning info is now in package.json and that's where the build scripts read it from
chore(version.js): remove unused/obsolete script
docs(guide/type): remove empty "Type" page in guide

Closes #1316
doc($compile): clarify compile function return value

If a compile function (within a directive) returns a function, it is a
post-link function.

Closes: #2713
docs(ngScenario): provide examples for element(...).query(fn)

element(selector, label).query(fn) is a very useful function, yet barely
explained. The developer guide should show how this function can be used
to conditionally execute behavior and assertions.
docs(tutorial): fix the float issue with the improve docs button
docs(Angular.js): add missing @returns to extend()