Update docs/dev_guide/topics/mojito_testing.rst

checked the flag modified
support custom meta and custom template data for ac.composite.done() to try to match the api from ac.done(). This solves issue #948
preserving meta info except the meta.view from children.
Merge pull request #951 from zhouyaoji/docs_add_yaml_exs

[doc: GH Issue #919] Added examples of YAML configuration and linked to a JSON to YAML utility in the Mojito Configuration chapter.
Merge pull request #949 from kinlum/patch-1

Update docs/dev_guide/topics/mojito_testing.rst
merging metas accordingly using mojito.util
adjusting examples and tests to use the new API for composite instead of the legacy one
Merge pull request #950 from caridy/compisite-view

issue #948: support custom meta and custom template data for ac.composite.done(). This PR matches the api of ac.done() and ac.composite.done()
supporting applicationConfigFiles definition in a setting other than master, specifically supporting runtime:common or runtime:server
Merge pull request #952 from caridy/app-json

supporting applicationConfigFiles definition in a setting other than master, specifically supporting runtime:common or runtime:server for that.
Adding new app for docs.