codeeditor: r-mode fixes
R: starting to integrate an alternative approach to evaluating R expressions using lively-R-evaluate https://github.com/rksm/lively-R-evaluate
codeeditor: r-mode fixes
network: delete request does not use forceUncached and addNoCacheHeader any longer
RInterface: adding support for lively-R-evaluate
R subserver: support for lively-R-evaluate