Remove Opera-specific hacks

Who uses that crap anyway?
Remove hacks for KGet, KTorrent and Apper

I’ll fix small progress bars globally instead of doing weird
application-specific hacks.
Remove unused AppTypes
Remove Konqueror-specific hacks
Remove KMail-specific hacks

No longer necessary.
Remove Arora-specific hacks

No one even uses that piece of shit.
Don’t special-case OpenOffice

I really don’t care about bad MS Office 2000 clones.
Remove Amarok-specific hacks
Remove KDevelop-specific hacks
Remove Dolphin-specific hacks