Subtask 208: Added LineGraphLoader x-scaling feature.

Rightmost column in input-data should contain time-values.
209 subtask 224 Adjust R script to show individual data

Added feature to plot individual data when input argument plot.individuals is set to TRUE
Added default value for graphType.

Otherwise, if none is set, object ‘p’ is not initialized and execution halts.
Reverted X-scaling feature. Back end does not support input-data requirement yet.
Merge remote-tracking branch 'origin/features/LineGraphRScript' into features/SAN-193_LineGraph_refactor

Conflicts:
	web-app/Rscripts/LineGraph/LineGraphLoader.r
SAN-209 implement individual points