Export: use X icon fa-times for closing things

[agh1]

See https://docs.civicrm.org/dev/en/latest/framework/ui/#icon-meaning-and-consistency

Overview

The button to return to search from choosing export fields should be fa-times (an ❌) rather than fa-ban (a 🚫)

Before

🚫

After

❌

Technical Details

See https://docs.civicrm.org/dev/en/latest/framework/ui/#icon-meaning-and-consistency for a reference on this.

The rationale (besides ❌ being used everywhere already) is that 🚫 implies you want to nix something while ❌ has the connotation of just wanting to get out of where you are.

[civibot]

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[mattwire]

Yay! Consistency :-)