* Added dockerfiles for aztk r gpu
* Removed tensorflow/cntk cpu versions
* Enabled configure option for shared lib for python
* Removed temp paths
* Replaced python version with aztk version
* Cleaning up args
* Added variable definition for tensorflow, shorten lines
* Added rstudio server script
* Added rstudio server port to aztk sdk
* Added R dockerfiles
* Added new line on dockerfiles
* Pointing dockerfiles to new aztk-base
* allow any user or application in the server to write to the history server log directory