Update linked task status

[jmatsushita]

#40 #43

Allow linked tasks to display an updated status on the page where they are in/trans-cluded

• Strikethrough linked task if complete at generation (depends on Allow transclusion of API endpoint results #42)
• Display task status live through client side transclusion widget (Transclusion widget #44)

Notes

Here are some proposals for how to inline task info.

This is a linked task with only the task number [#45](https://github.com/iilab/contentascode/issues/45)

[This is a linked task with a whole sentence and the task number #45](https://github.com/iilab/contentascode/issues/45)

This is a linked task where the task title is transcluded :[#45 title](https://github.com/iilab/contentascode/issues/45)

Here's what it would look like when displayed on a web page if the task is completed:

This is a linked task with only the task number #45

This is a linked task with a whole sentence and the task number #45

This is a linked task where the task title is transcluded Update linked task status #45