missing require dependency rserve -> underscore
improve error handling

always print the error if we don't know what it is
check there is an rclient before attempting to close it
fix reset links in wdcplot

add a require dependency to dc
use a closure to capture dc instead of generating link code
fixes #779
add news for hotfix release
bump version for hotfix
Merge branch 'hotfix/1.1.1' into develop

Conflicts:
	VERSION
	htdocs/js/rcloud_bundle.min.js