Move beep to proper place
Update installers as well
Install sound file on unix
for #542
g_file requires gio
beep sound is gtk only
add paplay
Use more useful example for url handler
typo
Change most Comment lines to be GenericName. GenericName should be
used when only one IRC client in installed.

	modified:   share/misc/hexchat.desktop
Change "no" to "nb" for Norsk Bokmål. In norway there is not only
one official language but two.

	modified:   share/misc/hexchat.desktop
Translate Comment in french, german, italian and norwegian bokmål

	modified:   share/misc/hexchat.desktop
Add GTK and IRCClient to Categories. This is Based on:

http://standards.freedesktop.org/menu-spec/latest

	modified:   share/misc/hexchat.desktop
Fix a typo.

	modified:   share/misc/hexchat.desktop
Add english generic name