workaround length-0 paste bug
use CairoSVG device, which gives us vector graphics everywhere and automatic high-DPS support and automatic anti-aliasing (since it's the browser's job now, not R's). Closes #121
Merge branch 'bugfix-graphics-device' into develop
update to upstream develop
bugfix: quote exec login credentials properly when asking SessionServer
tidy=FALSE so knitr doesn't muck with the indentation and spacing of the R scripts.
added power function to wdcplot formulae
check if token is null during handshake to avoid exceptions
on login failing, view automatically redirects
update bundles
reverted bad submodule reference
make default bar chart less wide
merged with latest develop, authenticated logins work