Fix typo/unused argument in fontloader.js->spliceString()
Fixes lint for windows; adds test/font/fontutils.js
Merge pull request #4543 from yurydelendik/winlint

Fixes lint for windows; adds test/font/fontutils.js
Merge pull request #4542 from fkaelberer/typoInSpliceString

Fix typo/unused argument in fontloader.js->spliceString()
Preliminary attachments support

Added a partial Filespec support
Added getAttachments in API
Added a new attachments view in UI (with a new icon by @shorlander)