Suggest imagery layers dialog should store decisions in a more usefull way

[mdk]

r5419: Suggest imagery layers is a very nice feature, but I have problems to use it:

I do a lot of repair works in switzerland. So I download a lot of small areas from all over the country. On the other hand there are a lot of local image sources (for a canton or even a single town).

Now I get a suggestion for an imagery layer I'm not interested in. What are the possible actions:

• "No" and "Do not show again"=false: The suggestion will pop up evreytime I download somthing - very annoying to press "No" all the time.
• "No" and "Do not show again"=true: The featue is compleatly disabled for all imagery sources (message.downloag.suggest-imagery-layer=false)
• "Yes" and "Do not show again"=false: The imagery source is added to the permanent imagery source menu - but I'm really not interested in this source!
• "Yes" and "Do not show again"=true: Same as "Do not show again"=false - what is the semantic?

But what I want is to say "I don't want source XYZ, and remember my decision for THIS source".

What happends if more than one source has to be suggested (e.g. *Kanton Solothuurn 2007", "Kanton Solothurn 2011", "Kanton Solothurn 2011 Infrarot"). Must I take all 3? What I have to do, if I only want one of these sources?

• So I would prefer to make the decision for each source individual.
• In "Imagery Preferences" in the list of "Imagery Providers" an additional column "Don't suggest", where I can see/enable/disable the feature for each source.

[Don-vip]

These popups have been removed in r5729 and replaced by a dynamic behaviour of the imagery menu. So there is no more need for this.