I added new samples to explain behaviour and modified all samples to have consistent styling. In updating the samples,
I removed the use of jQuery and instead use standard methods.
For the custom tooltip samples, I updated the styling to show color boxes like the regular tooltips.
- fix add dataset when all datasets have been removed
- set title for chart
- remove html legend
- set same size canvas as other samples
- remove user select from canvas
- set name for added datasets