Add whole-word option in model and view

The state is serialised, but the option is not used yet.
Implement whole-word search in the model
Add key bindings for the whole-word option
Change the label for the whole-word option
Add option label for the whole-word option
Merge branch 'feature/whole-word-option' of github.com:abe33/find-and-replace into abe33-feature/whole-word-option

Conflicts:
	lib/find-model.coffee
Find all when pressing Alt-Enter

When pressing Alt-Enter in find-view, all matches should be selected.
added specs for find-all
Remove log line
:lipstick: on find all specs
Oneline the list comprehension
Merge pull request #314 from atom/yannisgu-find-all

Find all
Remove the find / replace previous buttons from find in buffer.

Shout out to @berglar
Fix option button widths.
Upgrade find-view to use space-pen separate from atom
Begin upgrading project-find-view to use space-pen
Upgrade to use CompositeDisposables
Fix commands
Fix cancel handler
Use new tooltips