testing.
Added button for starting memory challenge.
Working on memory model class.
Implemented random placement of memory cards.
Started working on testing the class Memory.
Tested random placement of memory cards.
Started working on getting Memory and MemoryAdapter to cooperate
with each other.
Added new library(gridlayout.jar)
Turns out I didn't need the gridlayout library after all.
Now the memory cards can be flipped.
Now the memory game logic almost complete(what remains is to flip the
cards slower).
When selecting two different cards, the user is now given a couple of
seconds to view the cards before they are flipped over and hidden again.
"Alarm deactivate" instead of "you won" + javadoc
Now 8 cards are used instead of 4.
Replaced the ImageView with a ButtonView.
Made text on memory cards larger.
Added TOOD.
Merge branch 'memory_challenge' into development

# Please enter a commit message to explain why this merge is necessary,
# especially if it merges an updated upstream into a topic branch.
# 
# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.
Merge branch 'development' of https://github.com/Hasselmannen/sleepfighter into development

# Please enter a commit message to explain why this merge is necessary,
# especially if it merges an updated upstream into a topic branch.
# 
# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.