Embedded attachments in api work package model.
WIP wiring up attachments tab.
Linking to attachment and author on attachments tab.
Moved filesize display into helper.
Order work packages attachments by filename by default.
Merge branch 'dev' into feature/attachments-tab
Moved more display fluff into work packages details helper.
Massive Till style refactor of everything. Tests havnen't been replaced yet.
...aaaaand all the files i forgot to add.
Renamed/moved a bunch of templates and wrote directive tests for attachments.
Deleted accidentally added directive and added newlines.
Obeyed Till one last time.
Added table headers to attachments and using latest styles from prototype.
Merge branch 'dev' into feature/attachments-tab
Formatting attachments dates per system settings.
Hiding table headers if there are no attachments.
Merge pull request #1613 from opf/feature/attachments-tab

Feature/attachments tab