* implement max lengths for input dialogs that are sent to the server
* missed a double setMaxLength
* implement max string lengths server side
* add custom getText dialog with max length
* fix deck storage tab and miscellaneous server side
* add max size for deck uploads
* final pass on client side limits
* There is a circular update loop I had to cut off where the name field
updates the filter and then the currentRowChanged signal is firing without a row.
* I chose to make a private method to show intent instead of relying on
other QLineEdit methods (textEdited) that don't fire signals.
* Some other shenanigans may be at hand that are causing this
workaround, but my familiarity with Qt is pretty low.
* main.cpp: removed path checking and db loading
* card database: merge card loading methods into a single one
* settings cache: take care of returning safe paths for decks,
replays, etc..
* main window: if db loading fails (eg. first run), propose to run
oracle
NSIS: propose to run cockatrice instead of oracle
Rework card database loading
* Move carddatabase-related method out of deckeditor tab
* Load cards in another thread and render them progressively
* Optimize database reload after enabled sets change
Fix deck editor column width
* removed the noCard hack.
* getCard() no more creates cards instead of just returning existing
ones
* Fix the “edit tokens” dialog.
* PictureLoader: avoid trying to download twice the same card
* PictureLoader: correct return of card background
* AbstractCardItem: avoid recalculating card color at every paint
Use a different file to save custom tokens
Misc required improvements
* Use nullptr;
* Refactor CardInfoWidget to use CardInfoPicture and CardInfoText
instead of duplicating code;
* Added CardInfo::getColorChar()
* Fixed some potential crashes
* removed dead code related to CardInfoWidget
* Don't require a restart after adding a new custom sets file
* Bump CMake requirements to 3.1
