Git commits in Moodle 2.9.1 by Eric Merrill

commit f5273c374fd9bb2dffee103f05db0ce59bfae405
Author: Eric Merrill <merrill@oakland.edu>
Date:   Tue, 16 Jun 2015 10:37:57 +0800
Tag:    v2.9.1

MDL-50089 grades: Use grade item min/max in exports

commit 0624b774d0464a104775fc3ad8173dc519d5f03b
Author: Eric Merrill <merrill@oakland.edu>
Date:   Wed, 03 Jun 2015 04:25:06 +0800
Tag:    v2.9.1

MDL-48618 gradebook: Only use individual min/max for aggrigate grades

commit 954626a2b9075eba9881703baf68871afeffced7
Author: Eric Merrill <merrill@oakland.edu>
Date:   Sat, 28 Mar 2015 01:37:35 +0800
Tag:    v2.9.1

MDL-48467 atto: Clean the textarea during submission when in HTML mode