miscellaneous test
miscellaneous test
Merge branch 'develop' of github.com:himat/Math-Game into develop
minor change
Merge branch 'master' into develop
Operation Panel Integration/Optimization

Operation Panel Class optimized for incorporation into Math Game.java
Currently not visible - will not be until after all required panels are
added and panel "layer" is deleted/modified.
Added classes for cards
updated operation panel with new card classes
cleaned up unnecessary code
minor detail
fixed database connection