Disable Evince thumbnails preview sidebar (Side Pane)
Solution 1:
A workaround.
Open up any pdf and then manually close the sidebar.
Then go to Edit->Save current settings as Default or the keyboard combination Ctrl + T.
Now everytime you open any PDF, the sidepane will be hidden by default.
You can view it again by going to View->Side Pane or pressing F9.
Tested in Ubuntu 14.04, Evince 3.10.3