Implemented notes UI.

- Switched from a global reset in www/css/ts-screen.scss to a selected
  top-level elements reset to allow default formatting for user notes.
- Restructured the #entry-list and entry displays.
- Restructured notes div, now has a sub-div for text and a textarea
  element for input.
- Added Showdown.js, a JavaScript Markdown library for formatting comments.
- Moved EntryView blur events to the View events map.
- Added images for expansion of notes.
- Added the ability to edit notes.
- Split EntryListView.addOne into renderOne and addOne so that renderOne
  can be called with a new entry (fixes duration glitch)

doc/todo.rst

@@ -1,6 +1,5 @@
 Current
 =======
-- Add UI for note-taking
 
 Upcoming
 ========
@@ -16,6 +15,15 @@ Upcoming
 - Create a light, alternating background for entries
 - Add hover-enabled icons for editing entries/showing notes
 - Create tooltips.
+- Create a realtime tick-tock for the duration of the current item.
+- Mobile version of the app.
+- Refactor code, seperate out reusable bits for mobile version.
+- Automatic code-highlighting (Highlight.js)
 
 Done
 ====
+- Add UI for note-taking
+- Add Markdown converter for notes.
+- Fix the duration bug when adding new events. Need to set the nextModel for
+  the previously 'current' timestamp and set the nextModel of the new timestamp
+  to 'null'