Refs #154

Make sidebar less cramped.
Refs #154

Removed unnecessary selector.
minor grammatical correction
Merge pull request #157 from AD7six/patch-1

minor grammatical correction
Fixes #158.

Added missing backslashes.
Add XML Schema Definition references for 3.7/3.8.

I made those additions only in the section on the configuration file
in the assumption that this is where people will pick an initial XML
configuration template. I did not want to make the other places look
more complex than they have to be, espacially as the XSD is not
necessary for running PHPUnit.

I also did not elaborate on using the XSD or its potential benefits
to avoid the need of additional translations (haven't written any
Japanese or Chinese for a while).
Merge pull request #160 from webfactory/add-xsd-reference

Add XML Schema Definition references for 3.7/3.8.
Fix typo "effiency" to "efficiency" in 3.4 - 3.8.

The quote in the beginning of the code coverage documentation is wrong.

Source: "Beautiful Testing"
http://shop.oreilly.com/product/9780596159825.do

Chapter 11 written by Murali Nandigama starts with:
> **The beauty of testing is found not in the effort** but in the efficiency.
Knowing what should be tested is beautiful, and knowing what is being tested is beautiful.
Merge pull request #161 from hkdobrev/code-coverage-quote

Fix typo "effiency" to "efficiency" in 3.4 - 3.8.
Use friendlier language :)
"depende" instead of "depdende"
Merge pull request #167 from lerox/patch-1

"depende" instead of "depdende"
Bump copyright year
Closes #105
Tweak <title>
Ignore .ant_targets
Closes #112
Closes #162
Delete unused script
Simplify syntax highlighting for HTML output formats by using highlight.js