IVGCVSW-3726 Doxygen touch-up

 * Doxygen comment touch-ups
 * Fixed markup in .dox files
 * Fixed stylesheet
 * Doxyfile changes
 * Added logo file
 * Added header file

Signed-off-by: Ryan OShea <Ryan.OShea2@arm.com>
Change-Id: I94c7f5a6923a0bbb5c6ed610f1f55d57e2bb8a49
diff --git a/docs/00_introduction.dox b/docs/00_introduction.dox
index 981e033..6600640 100644
--- a/docs/00_introduction.dox
+++ b/docs/00_introduction.dox
@@ -1,4 +1,4 @@
-/// Copyright (c) 2017 ARM Limited.
+/// Copyright (c) 2020 ARM Limited.
 ///
 /// SPDX-License-Identifier: MIT
 ///
@@ -824,3 +824,4 @@
 
 **/
 }
+