[plugins] move apps into plugins
[registry] include integration points for plugins
[server] update plugins path for dev
[kibana] require all plugins, not just apps
[server] serve plugins statically at '/plugins'
[registry/vis_types] fix refs to the vis_types
[registry] new Registry class collects private modules
[registry] use registrys to access objects
[indexed_array] rename tests
[registry] added test
[dev_server] serve and instument plugin files
Merge branch 'master' into plugins
[plugins] move under kibana source
[server] don't treat built-in plugins special
[private] track functions, not ids
[bin/kibana] updates to pass shellcheck
[server/init] include plugin_folder in the environment
[serve] send bundled and external plugins
[devServer] shutup
[plugins] added README.md