Before: If default is checked, Oracle will always save to the AppData path.
If a path to cards.xml is set, Oracle will update that cards.xml.
If Oracle is run before a path to cards.xml is set, if default is checked, cards.xml will be saved on the AppData path. Furthermore, this path will be set as the cards.xml path for both Oracle and Cockatrice.
If Oracle is run before a path to cards.xml is set, if default is NOT checked, cards.xml will be saved at the selected path and this path will be set as the cards.xml path for both Oracle and Cockatrice.
If a path to cards.xml is set, if default is NOT checked, cards.xml will be saved at the selected path but this path will NOT be set as the cards.xml path for either Oracle or Cockatrice. This allows people who already have a cards.xml (which may be customized), to still obtain clean copies of cards.xml through Oracle without overwriting their own
Removed some redundant code. Factored out translations.
Logically inverted the if... else statement by removing the logical not (!). Cleaned up a ;;.
Fixed Valgrind warnings

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.
Merge pull request #279 from ctrlaltca/valgrind_unified

Fixed Valgrind warnings
Merge pull request #245 from pliu037/oracle-cards-path

Oracle cards.xml path