Added schema for cards.xml
Fix: <color> can appear more than once
Checks if CUSTOM folder was successfully created. If not, prints qDebug message and proceeds as normal except uses default card images instead of custom ones.
I was too hasty and forgot a + and to toLatin1() a QString in the qDebug arg.
Fix #248: the token dialog generates cards irrespective of their case and punctation.
Changed .toLatin1() to .toUtf8().
Merge pull request #246 from pliu037/create-CUSTOM-folder

Picture path/CUSTOM folder creation
Merge pull request #251 from arxanas/case-insensitive-tokens

Fix #248: the token dialog generates cards irrespective of their case and punctuation
Merge pull request #244 from ctrlaltca/cards_xsd

Added schema for cards.xml and tokens.xml in xsd format