first spike for sprints
changes UI slightly to display sprint
refactors backlog item into list
slightly changes to backlog ordering
allows backlog/sprint reordering
fixes a bug with backlog/sprint ordering
adds best in place
fixes a bug where an event is triggered twice when backlog is sorted
further enhancements to the sprint planning page
merges with master
documents sprint related elements
updates db schema to reflect new sprint
wip, sprint planning
allows to create another issue
puts the ability to start a sprint into a dialog
adds the ability to start and finish a sprint
adds code documentation to new sprint modules
removes send to bottom after initialize hook
covers sprint logic with specs
adds specs for new sprint feature