- moving active color to grey instead of yellow

- moving active color to grey instead of yellow
- ******** IMPORTANT *********
if TemplateEncoding system preference is set to iso8859-1, there are a lot of encoding problems : MARC::File::XML don't like it, as MARC::Record is supposed to work in MARC8 or UNICODE.
Thus, it seems that all accents are transformed in the process html => xml => marc.
Thus, i've reintroduced the html => marc behaviour if the TemplateEncoding is set to iso8859-1
(i've fixed the html2marc as joshua proposed previously, fixing a remaining bug)

This solution is a workaround : we will have to find a correct solution for Koha 3.0, to move every Koha to UNICODE and UNICODE only. But for instance, I tried some things but failed. Thust this solution, that works correctly for french libraries and should change nothing for unicode ones.