Bug 26703: errors, ill and installer folders

Bug 26703: errors, ill and installer folders

Swapped the order of the page titles to have the unique information
first, i.e. the name of the specific page displays first, and the name of the website (e.g. Koha) displays at the end.

To test:
1) Apply patch
2) Ensure each of the files in the errors, ill and installer folders are swapped around to display the most unique information first, and the website name is at the end
3) Ensure the pages displayed on the Staff Client that correspond to
these files also display the changes

Sponsored-by: Catalyst IT
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Henry Bolshaw <bolshawh@parliament.uk>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>