fixes: #6500 border spacing on non-tinyMCE tables
fixes: #6500 border spacing on non-tinyMCE tables

test-plan:
* go to a page with a table on it
 (like the quiz page that has a table that says:
Questions Limits Points Due Date Availability)
 it should not have any spaces between cells
* make a table in tinyMCE, tell it to have a
 cellspacing of 40
* save it
*it should have a big space around it's cells

Change-Id: I39908d86b510b2b4792097360063b7b90b4d7091
Reviewed-on: https://gerrit.instructure.com/7217
Tested-by: Hudson <dfb64870173313a9a7b56f814c8e3b33e268497a@instructure.com>
Reviewed-by: Ryan Florence <2d8900489f91ac272fd9ce9d5789db6522668ca2@instructure.com>

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