idea: changed labs announcement for user

[edmundlaugasson]

When labs choices are changed then somewhere in the i-tee web interface corner would be appear dynamically appropriate announcement about added, removed labs. Could be solved also as pop-up but should be configurable through preferences. Then the student knows about new labs and can refresh tehe view in order to access these new labs. Currently there should be announced in other ways in order to announce about new labs and this could cause unnecessary waiting which could be used for lab activities, especially in case when lab access time is limited.