They are needed to fetch prices from deckbrew and possibly, in the
future, for ssl server connections

For some reason there was an issue with making the creature image white,
i found a workaround. Icon should now display correctly.

+ added updated mac icon that was missing
~ resized cockatrice.png

~ Updated the back of the card, cleaner lines, slightly more modern.
~ Updated game icon/logo

I added a check to see if the event PT is empty, if it is, we try and
use the PT from the cards.xml. In resp to issue #330.

Used tr() function for auto-connect label. Changed formatting to adhere to coding style guidelines. 'Save Password' setting is now saved when cancelling the Connect dialog

Added 'auto connect' checkbox to connect dialog. When the main window becomes active for the first time and auto connect is set to true, it will call connectToServer at that point.

Cockatrice can now load images both with and without .full. Will need to clean-up bool stripped (used to determine .full suffix inclusion).

Running cockatrice in valgrind i didn't found any bad memory leak
(good!), but only a few jumps depending on uninitialized variables.
Even if the possibility of crashes are remote, it's nice to sort them
out.

I should probably bust this out to a method.

Cherry-picked b9cb61abd05f83c67740aafa5e1e6939143547e4

Moved the button from the paths section to be below the "Download high-quality card pictures" checkbox. Button now reads "Reset/Clear Downloaded Pictures". Removed "Path to"s from card/token database, hand/stack/table/player info background, and card back labels.

Added notification messages informing users of the success or failure of clearing downloaded images.

Added a button and the functionality to clear all downloaded images (all images within subfolders at picsPath/downloadedPics) under Settings.

Like M15’s .png that cockatrice wrongly saved as .jpg
Additionally, move the QImageReader declaration outside of the inner
loop

Removed the QLists for determining image format. Instead, using QImageReader, both when downloading/saving and when loading, to determine the correct format (Cockatrice now supports all QImageReader-supported formats).
Image loading still uses one for loop to iterate through the QList of paths to folders in which to search for images.

Refactored the magic bytes into two QLists: one containing a list of QStrings representing the supported extensions, the other containing a list of QByteArrays representing the magic bytes in hex.
Refactored the image loading loop to be two nested for loops: the outer loop iterating through the QList of paths to folders in which to search for images and the inner loop iterating through the QList of supported extensions.

Switched back to using QFile instead of QImage for saving as QImage's save function adds overhead to the file size, leaving me unsure whether the original image is affected.