Handle one file logging to multiple Sentry projects correctly

[vanesa]

Currently the Sentry extension will render a link to the first project it matches with. However, there are cases in which a document file can report to multiple Sentry Projects, e.g. libraries or like in our case web and browser both reporting from /shared. More information can be seen in this conversation: #13 (comment)

The most straight forward solution would be to render links to all the matching projects. If the project number surpasses a certain threshold we would have to display it in a more user friendly way. We should target this for the next release version.