what is the best way to remove all sidebars on the right side of all views?
The simplest way would be by removing references to the corresponding sidebar views from the respective layouts. Try copying records.php and record.php from ./clients/base/layouts/records/ and ./clients/base/layouts/record/ over to ./custom/clients/base/layouts/records/ and ./custom/clients/base/layouts/record/.
Proceed to manipulate the copies in the custom directory so as to remove the references to the sidebar views. You may need to play with it a bit to get all the scrolling, etc. to work properly, but that should get you going towards your goal. Be sure to purge the contents of your ./cache directory and reload Sugar to apply your changes.
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