Harmonising Name of Activities
In reference to task https://phabricator.kde.org/T15294 -Added Parenthesis in oware and oware_2player activity -Added Parenthesis in checkers and checkers_2player activity
In reference to task https://phabricator.kde.org/T15294 -Added Parenthesis in oware and oware_2player activity -Added Parenthesis in checkers and checkers_2player activity