[stable10] ActivityManager can be initialized with null for the sessi…#28420

PVince81 merged 2 commits intostable10owncloud/core:stable10from

stable10-152bcec9b2b2c00f8601acfbe4809a5595c4a441owncloud/core:stable10-152bcec9b2b2c00f8601acfbe4809a5595c4a441Copy head branch name to clipboard