[PATCH] Improve WMS Rectified Image-dialog

[xeen]

• Supports more than one service (only limited by screensize :))
• Makes WMS less picky about the given URL and accepts pretty much anything
• Auto-selects service depending on clip board contents
• Adds a new "only this once and it means nothing to me" mode that allows entering any WMS server URL without having it to commit it to prefs
• Improves discoverability for new users as it offers a "visit homepage" link for each service.
• Services are hardcoded although it should be possible to add them via plugins and the like. The regular expression and links are pretty complicated, too, so I don't see the reason why this should be available via Einstein either.

For reviewing:
The extendedDialog patch fixes some minor bugs. The patch is not specifically depending on these changes, but they should get checked in regardless.

Pratically it's a complete rewrite of the file in question, so it may be easier reviewing the file as whole. Attached for you convenience.

[stoecker]

In [o15827]. You had two illegal characters in line 194 and 198.

[xeen]

poor UTF8 :(