Icon in menu

- The change reverted, the icon is displayed no only in the menu but also in the page left from the trend graphs.
[JENKINS-22215] Side panel menu is missing on pages with listing of source codes

- Side panel menu included to the page with listing of source codes.
- "Cppcheck Results" h1 header added.
- File name part moved from h1 to h2, <wbr /> element added after each slash "/" to allow wrapping of long paths without spaces and to hide unnecessary horizontal scrollbar.
Merge pull request #10 from mixalturek/master

[JENKINS-22215] Side panel menu is missing on pages with listing of s…