ApplicationConfig: Made the javadoc more consistent.

Applied the following format for all configuration values:

Text text text.
<p>
Default: default value<br>
Value: org.atmosphere.value
Fixes #1135
Fixes #1135
Cosmetics
Merge pull request #1133 from slovdahl/atmosphere-1.0.x-slovdahl

ApplicationConfig: Made the javadoc more consistent.