jobb felso menu hozzaadva a kurzus activityhez is, jobb felso menu kiegeszitve, logout kivalasztasakor uj activity jon letre (a stack torlodik)
Merge branch 'master' of https://github.com/szaza/canvas-android

Conflicts:
	Canvas/src/edu/ubbcluj/canvasAndroid/backend/util/PersistentCookieStore.java