Make the internal open edX text editor usable in RTL languages

at the moment, there are a few RTL issues deriving from the text editor used in edX (codemirror). The most important issue, is that courses’ team in Israel are currently unable to work with the internal text editor of components, as well will the HTML editor. They work with external text editors and only then copy to open-edX(!!). when trying to select a word the cursor jumps to other location , this is a known issue when using RTL. This problem exist in all fields that uses codemirror as text editor. campus team suggested a solution for RTL languages: