Show annotations more compactly in lists

[tanius]

The "Annotations" section of the Open Ethnographer backend shows all annotation with the full text they are applied to (column "Quote"). Since that quote tends to be long, it leads to a very long annotations list that is difficult to navigate.

This list should be shown more compactly by shortening the "Quote" column as follows: the first five words, then "space, ellipsis, space" ("…"), then the last five words of the quote. The full quote is still visible by going to the annotation's detail page.

[damingo]

Quotes are now shortened in the list of annotations. The complete quote can be seen by hovering with the mouse over the shortened quote.