Remove output_dir from config file.
Reactivate tipsy hints.
Fix the code to get exactly the same HTML as with master.

* Get the right last git update date.
* Display relative date for the commit date.
* Fix git URL for commit links.
* Fix typo in authors list.
Fix a bug in the array union function.

Rename the function array_union to mergeDrivers.
This new function search if the driver name exist and not the whole
entry (i.e. driver name + note). If it doesn't exist, we add it in the
array. If it already exist, we replace by the new value.
Merge branch 'Xenopathic-xml' of github.com:MightyCreak/mesamatrix into Xenopathic-xml

Fix the output_dir problem.