support for right to left languages

over the years, we have been asked for support for right to left languages in webui. This week, a client asked us about the status of rtl support (arabic). They would like to use Nuxeo webui out of the box on a new application (not their initial Nuxeo application, which, they used Angular to create a custom rtl front end for). Carolina, Miguel, Gabriel and Sam did a quick review of our current, ootb support modifying the css. Invision link shows the results. for the most part, we are looking pretty good. the biggest issue besides paddings and margins (which are hard coded) is that the drawer is still on the left side of the screen (although it is properly mirrored). It should be on the right hand side of the screen.

We confirmed with the client that mirroring graphs/calendars, while it would be nice, is not required.

https://nuxeo.invisionapp.com/freehand/document/gVOoTjmp2

Consideration for other rtl languages, such as Hebrew, should be given.