Bug-87: unit tests for utils - part 1
Add app icon
Merge pull request #30 from thomas771020/bug-83-app_icon

Add app icon
Merge pull request #29 from john-hu/bug-87-unit-test-utils-part-1

Bug-87: unit tests for utils - part 1, r=thomas.
Bug-92: rename the package name from org.vosie.wikicards.utils.test to
org.vosie.wikicards.utils
Merge pull request #31 from john-hu/bug-92-rename

Bug-92: rename the package name from org.vosie.wikicards.utils.test to , r=me (only package name change, no side-effects.)
Use static variable to store card position.