reduce calls of \OCP\Util::needUpgrade()
where \OCP\Util::needUpgrade() is called we can call as well
self::checkUpgrade and use the cached result
In line 877 the call way unnecessary anyway because of the first part of
the if statement
move caching to \OCP\Util::needUpgrade
renaming variable
fixing testNeedUpgradeCore()
cache result of checkUpgrade() in self::$needUpgrade
reduce calls of \OCP\Util::needUpgrade()
where \OCP\Util::needUpgrade() is called we can call as well
self::checkUpgrade and use the cached result
In line 877 the call way unnecessary anyway because of the first part of
the if statement
move caching to \OCP\Util::needUpgrade
renaming variable
fixing testNeedUpgradeCore()
fix typo in variable name
deleting tabs