Adds links to signups in query.
Adds remove-buttons for filters
Fix random null string.
Remove custom block hiding class

* Use BS provided class instead.
Change ID link to row-link; moved ID to be debug-option.
Adds default visible columns
Adds result column ordering and grouping.
Add option groups for the Add filter -component.
Merge pull request #3 from jlaunonen/querybuilder

Querybuilder update