Revert "removing false optimization, inlining triggerEvents. Thanks @caseywebdev"

This reverts commit 957595f56f3be1f84d377cc97cae3b683fb3019f.
Bump Underscore to 1.4.3 in package.json and index.html
Merge pull request #1911 from gsamokovarov/bump-to-underscore-14

Bump Underscore to 1.4.3 in package.json and index.html
Fixes #1913 -- updates Backbone defaults semantics to use _.defaults.
Fixes #1912 -- Collection#fetch only parses once.
Cache context, avoid switch in loop, profit
failing unit tests with 'defaults'
Merge pull request #1917 from elasticsales/master

failing unit tests with 'defaults'
Fix earlier commit -- got my defaults ordering backwards.
inlining defaults
Merge pull request #1916 from caseywebdev/events

Cache context, avoid switch in loop, profit
Fix #1915 - `parse` ordering in `update`
Merge pull request #1920 from caseywebdev/master

Fix #1915 - `parse` ordering in `update`
Backbone 0.9.9
trying to reset against master
removing old isValid tests
adding a 'listenTo' example to the main View docco.
tweaking test case for IE7
router test tweak to placate oldIEs
router test tweak to placate oldIEs