Add SQL modes to developer tab

[eileenmcnaughton]

Overview

Developer tab shows information for debugging reports, this adds SQL Mode info and fixes a formatting issue

Before

Also nbsp handling is broken since security release

After

Technical Details

The escaping I added is not required but I think it's best practice. Our last round of fixing escaping resulted in spaces being shown as &nbsp - this also fixes that.

Comments

I hit issues because of the STRICT_TRANS_TABLES sql mode imposed on dev sites that was hurting my head. This would have helped me get there quicker

[civibot]

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[colemanw]

Looks good.
The test fail looks unrelated. retest this please.