* Removed remaining picture handling from card database and cardinfo
 * removed the “noCard object” hack

fixes #1520

Moved setting files & Added code for a future portable build

As per @daenyth’s comment:
https://github.com/Cockatrice/Cockatrice/pull/792#issuecomment-76593730

This is the first implementation of a theme manager. It’s a rebased and
revisited version of #792.

After adding a card to the main or side, the search text will become
selected to easily start the next search

fixed welcome msg
added some articles
added database phrase to card updater
cosmetic changes to the description in edit sets

As per @daenyth’s comment:
https://github.com/Cockatrice/Cockatrice/pull/792#issuecomment-76593730

This is the first implementation of a theme manager. It’s a rebased and
revisited version of #792.

Move the “check unknown sets” method inside the cards database, so that
it can be executed when the card database gets reloaded after a card
database update.
Additionally, show the user a welcome message the first time they run a
new cockatrice version, so that they know why they get shown the “edit
sets” window and how to hide/disable sets.

Needs to be tested on mac