rename DownloaderPanel class.
- rename specfic download panels.
- introduce intermediate MissingImagesDownloadPanel.
get download button caption via abstract method.
- get download images swingworker via abstract method.
- move down missing images download swingworker to specific MissingImagesDownloadPanel.
add high quality image updater to downloads dialog.
remove obsolete method.
enable background button if updating hq images.
optimize check for missing images.
ImportDialog does not need to use MissingImages.
rename poorly named MissingImages class to DownloadImagesList.
remove references to "missing" images.
remove commented-out code.
add Restrain
add Fend Off
Merge UI updates.
remove extra space in effect
remove Ice, which is one half of a split card
merge changesets from lodici