fix(dependency): add 'angular-cookies' as bower devDependency

Added `angular-cookies` as a devDependency to `bower.json`.
fix(demo): change src to angular-translate script

Changed the src attribute from "angular-translate-latest.js" to
"angular-translate.js" in demo files. Also removed whitspaces at the
end of every line.
Merge pull request #103 from archer96/fix96

missing devDependency 'angular-cookies', wrong file name for angular-translate.js in demos