[maven-release-plugin] prepare for next development iteration
Deletes the changelog, as it is outdated.

Interested readers should use the commit history instead.
Ignores Idea files
Merged all source files under src/*/java

This should allow analysing the project with Sonar, which I think outweights
the benefit of having different source folders.

This change may be 'reverted' once http://jira.codehaus.org/browse/SONAR-926 is
implemented.
Fixes of Sonar-detected issues.
[maven-release-plugin] prepare release selenium-htmltojava-maven-plugin-1.1.0