OPAL-2353 Opal deals with R server controller. Reports can be done on a distant R server.
OPAL-1975 No such R session is thrown
OPAL-2353 Clean remote R working directory after report is done, report style option added.
General config modal resizable
Report modal minimum width
opal.report.style parameter added with default value
OPAL-2359 Added logback logstash bridge.
Check if R server is really started
Opal deb suggests reserver-admin deb
R server conf removed from opal server