Bug fixes, new features

The following Jira tasks are solved.

Broken HTML code on results page
Total number of lines in the footer extended by total number of files and total number of folders.
https://issues.jenkins-ci.org/browse/JENKINS-21230

Possible resource leak in parser
https://issues.jenkins-ci.org/browse/JENKINS-21229

Broken differences in build summary for failed builds
https://issues.jenkins-ci.org/browse/JENKINS-21223

Broken link in menu on the job page before the first build
https://issues.jenkins-ci.org/browse/JENKINS-21174

Summary is missing for the first build
https://issues.jenkins-ci.org/browse/JENKINS-20646

The SLOCCOUNT analysis Results not available in IVY builds
https://issues.jenkins-ci.org/browse/JENKINS-17024

sloccount churn graph
https://issues.jenkins-ci.org/browse/JENKINS-14504

Support for matrix project
https://issues.jenkins-ci.org/browse/JENKINS-12816

Memory consumption is huge
https://issues.jenkins-ci.org/browse/JENKINS-4769