only one instance of a tab for a certain game can be open at a time.
commited by: Carson Wolf
change it so if a tab if a tab need to be closed because another tab is
being made it wont make the new tab if the tab did not close
commited by: cjwolf
rdbaker: pulled in dev-codonbleu and resolved conflicts
Merge pull request #367 from zoccihedron/fix-#351

only one instance of a tab for a certain game can be open at a time.