Log missing log templates to Sentry.

h/t @brianjgeiger
Add folder icon to built-in storage.

Thanks @lyndsysimon for image.
Add shims for IE8

To add Array.isArray and Object.create
Use square bracket notation for 'delete'
Merge branch 'hotfix/0.21.4'
Merge branch 'hotfix/0.21.4' into develop
Bump required version of hgrid, which has a minor fix for IE8
Merge branch 'hotfix/0.21.5'
Merge branch 'hotfix/0.21.5' into develop
Remove .anchor tag to prevent navbar from being occluded

fix #1262
Merge branch 'hotfix/0.21.6' into develop
Merge branch 'hotfix/0.21.7' into develop