[PDF] add inline images on base64
* first pdf layout
* remove the bootstrap less sources from our repository. We're using the composer packagist twbs/bootstrap
* ads the composer.lock. This file contains the exact version of all dependencies
* ads number of applications to the jobs dashboard
* minor CSS changes
[General] Fixes: Bootstrap javascript file could not be loaded.

* removes the obsolete bootstrap directory.
[PDF] add inline images on base64
Merge branch 'feature/pdf_images_as_base64' into develop

Conflicts:
	module/Applications/view/applications/manage/detail.pdf.phtml