Investigate on a possible memory leak with WebUI

Following this simple scenario is enough to reproduce:

1. log in into the WebUI
2. then select a folder then choose a document in the folder listing, and repeat 25 times.
3. with Chrome process manager, you will observe that the memory used by this tab grew from ~220MB to 450MB. And it continues to grow if one continues to use the webUI.

The more the application is used, the more Chrome occupies memory. At the end, it can slow down the navigation a lot.