Mark a document as pinned on `/app/documents/:id`
Mark a document as pinned on `/app/context-search`
Added a simple "pinned" marker in full-document template
Associated test
Avoid memory leak
Style
Use Error directly
Merge pull request #35 from AnyFetch/fix-zero-pins

Avoid memory leak
Merge pull request #34 from AnyFetch/mark-pinned-documents

Mark pinned documents
Merge branch 'pm-work' into template

Conflicts:
	app/views/app/full/tablet.html
initially display pinned docs