Better inform the user of empty result sets
Adds checkbox whether or not to plot evenly spaced
SAN-208 Better handle scaling on x axis
-initial version without frontend integration (not reading request params) and R integration (not passing script params)
Removes plotEvenlySpaced argument

It was agreed that the R script would look at a special file which
contains the spacing data.
SAN-208 Better handle scaling on x axis
-frontend setting is now connected to backend and R script
-R script has some problem, so this version is not ready yet to be merged
Merge branch 'features/SAN-208_BetterScaling' of github.com:thehyve/Rmodules into features/SAN-208_BetterScaling

Conflicts:
	src/groovy/jobs/LineGraph.groovy
	src/groovy/jobs/table/ConceptTimeValuesTable.groovy