This is taking advantage of the fact that react-intl can support nested IntlProviders. GUI will use it’s own ConnectedIntlProvider, that maintains the translations in redux, while www will continue to have it’s own IntlProvider that is initialized when the page loads.

Moving the IntlProvider into GUI meant that nothing in the playground can use injectIntl, so the default project name needed to move into the component instead of being in the reducer.

The Localization HOC is added, it takes an optional onSetLanguage handler, so www can pass a function that will set the cookie that www needs.

* Make loader blocks mirrored on RTL

* Whoops, forgot to change names

* Fix problems with flipping back

responding to canSave without needing canSaveNew prop
removed canSaveNew
added default for onUpdateProjectId
removed conflict files erroneously added
don't pass down onError
got tests passing
better creating and saving logic and names

don't set redux project title directly from sb uploader; only extract title from .sb2 and .sb3 filenames

* Look up video id based on locale.
* add japanese video ids
* add test

* Adjust language icon and caret in menu-bar
* remove unused style from `language-selector.css`

Also added jsdoc to locale-utils

stripped title handling from sb file uploader
updated more projectState related names
simplified hash-parser-hoc logic slightly

* Translate "(empty)" and "length {value.length}"
* Use FormattedMessage

load new project, both json and title; set title on file load; draft of code to fetch title from api