* This change's purpose is to get rid of the extra borders shown around the window border. These arise from using JInternalFrames in a JDestopPane and are impossible to remove in a forwards compatible way when using JInternalFrames. The solution it to move to have MagePane inherit from a plain old JLayeredPane instead of JInternalFrame. All of the MagePanes are always maximized anyways, so this doesn't lose any functionality.
"b" + "r" now changed to 'b' + 'w'. It's more straight-forward, and may cause perfomance improvements - character primitives allocation is faster and less expensive than string creation.
I used Intellij IDEA to automatically refactor code to achive 3 goals.
1) get rid of anonymouse classes, and replace the with lamba to get more readeable and clean code (like in TableWaitingDialog).
2) make effectively final variables actually final to avoid inadvertent changes on it in further releases and keep objects as immutable, as possible.
3) Get rid of unused imports (most of the changes) in whole project classes.
* Shift-Click / Shift-Drag now work as expected as far as multi-selection
* Deck editor saves split pane split positions
* Card layout and sort settings are now saved along side the a deck when saving to the .dck format, so that you have back the exact same deck layout when you re-load the deck.
* Fixed the symbol image downloader to work around some of the large-size symbol images being missing on gatherer. Falls back to the medium sized images currently for those symbols.
* On specific platforms (it seems Windows 7-10, JRT 7+), under our specific configuration, in the case where the user selects the exact same file as they chose during a previous selection, JFileChooser reports that the user selected a file, but returns chosen file = null. This commit works around that by assuming they chose the same file as last time in that case.
* Deck area orientation now changes depending on the context.
* In free building and sideboarding, the sideboard and maindeck are shown side by side.
* In limited deckbuilding, the sideboard (with your limited pool) is shown above the maindeck.
