[JENKINS-34628] - Bundle "Font Awesome" and "Google Fints: Roboto" dependencies to prevent failures in the offline mode (#2318)

* [JENKINS-34628] Remove dependencies with external static resources

* [JENKINS-34628] License files were added

* [JENKINS-34628] Added references in the About page

* [JENKINS-32936] Initial source code modifications

* [JENKINS-32936] Three views are using this approach

* [JENKINS-32936] Conflicts were resolved in a wrong way

(cherry picked from commit d9d4f08d)

As suggested by Tom, removing the tag name restriction
and correcting the xlg class name.

See the Icon class for more details

Fix the width & height of the icon via CSS.

Previously, we were relying on the actual image being served as a
correct size. This is fine for icons we ship in Jenkins, but when
plugins use avatars as icons, those images might not come in the correct
size.

This reverts commit 9fb54236, reversing
changes made to 36528a68.

Also ... unbundling of plugins from Jenkins core.

(cherry picked from commit 35eb8ac9)

make equal height of tab regardless if selected or not

(cherry picked from commit 70613202)