changed the mica distribution version to 7.x-9.1 and updated mica.sql
Borrow install-opal.sh and make it standalone

* install-opal.sh: change VAGRANT_DATA path so script runs without vagrant
* Change what R bits are installed: no clientside packages (e.g. RStudio)
* Change how R datashield packages are installed

**CHANGES ARE NOT FOR UPSTREAM**
Merge branch 'AT-edit' of github.com:andrewjamesturner0/vagrant-obiba into AT-edit