Replying the first: I don't see pictures in an html page, of course, is more a personal browsing style. If I can't I'll live with it but is quite annoying, for me.
And the second, I found, yes...
I deleted all context menu because I have my own except those, as you pointed, that have been changed their definitions so I had to include inside them the references to my own definitions and... almost done.
(I have found writting this that a submenu doesn't appear... GRrrr)
You do this to drive me crazy, right?
Well, after the... obfuscation... I had with this new unrevealed mysteries I'm starting to tame this K-meleon (thank god).