doing strict check
Adding reversible sorting to the app list
Added cursor: pointer to clickable stuff in table
helvetica, 200 as fallback font on headlines
Review: reverting style changes
Review: changing '=== undefined' to '== null'
Review: using camelCased variables
Generalising sorting into SortableCollection
Review: changing api to be setComparator
Changing default sorting of task and app list
Code cleanup + some styling in task list
Moving comparator function into setComparator func
Merge pull request #304 from mesosphere/feature/sortable-columns

Feature: Sortable columns