[LIB_HUBZERO] correct signature on render() to match parent class
[LIB_HUBZERO] make is_iplocation() static
[LIB_HUBZERO] make is_positiveint(), validemail(), validtext() all static
[LIB_HUBZERO] make getTools() static
[LIB_HUBZERO] make getVersionInfo() static
[LIB_HUBZERO] make passwordMatches(), comparePasswords(), isPasswordExpired(), getInstance() all static
[PLG_GROUPS_WISHLIST] call WishlistController calls through instance rather than statically
[PLG_RESOURCES_REVIEWS] make getComments() and getAbuseReports() static