feat(Grunt): add grunt-angular-template
style(Grunt/bower): remove unnecessary change to bower.json
Merge branch 'I#782_grunt-angular-templates' of https://github.com/tgillieron/generator-jhipster into tgillieron-I#782_grunt-angular-templates

Conflicts:
	app/templates/Gruntfile.js
Merge branch 'tgillieron-I#782_grunt-angular-templates'