Merge pull request #100 from alex-deaconu/master

[chore] Fix background-setting styling
updated demo page to deprecate tooltip in favour of ui popover
Merge pull request #101 from nexus-uw/chore/deprecate-tool-tip

updated demo page to deprecate tooltip in favour of ui popover
UX tweeks to column selector

- use a simple select instead of the blue labels for adding columns
- the "-" needs to be a "circle -": using glyphicon glyphicon-minus-sign
- updated e2e tests accordingly
- rebuilt dist
Merge pull request #102 from nexus-uw/bug/column-selector/use-select

UX tweeks to column selector