add docular_webapp_target

grunt-docular 0.1.2 supports `docular_webapp_target` configuration so that the target path can be configured

add grunt task `docular` as a sub-task for `build` task
update groups and sections settings for docular
encapsulate `toEqualData` jasmine matcher

delete `test/mock/**/*.js` from `files` of `karma.conf.js`
add `jquery-cookie` bower dependency