Revert: Update Doxyfile to doxygen version 1.8.8
Revert: Update Doxyfile to doxygen version 1.8.8

I hope I didn't messed up any configuration in the Doxyfile.
Source browser is active by default in this file. (reverted from commit 7a2c2555ad5da43bde5a06bd4185ce0e463075f4)

simgunz/doxymatlab,simgunz/doxymatlab,simgunz/doxymatlab