Add show task route
Add show method to tasks controller
Add show task view
Update styles
Change header in show task view
Add link to new task in index view
Add show task links for each task in index
Add find done tasks method
Add spec for find unfinished tasks
Add edit task route
Add edit task route handler
Create edit task view
Update edit task view
Add edit task link in show task view
Add update task route
Add update task handler
Update font sizing
Add destroy task route
Add destroy task handler
Create destroy task view