Update pom version to 2.3.4-SNAPSHOT
[WIP] new: add coll-grouped-by util fn and expectations
[WIP] new: add expectations for keywordize fn
[WIP] new: sort-fns for coll-grouped-by util fn
[WIP] new: util trim-from and expectations for all util trim-* fns
[WIP] new: expectations for breadcrumbs parse fn
[WIP] new: commit message template
[WIP] new: 'runs' section in image view page

Including:

- Refactor of the image model and view into a separate namespace
- Needed new strings in en.edn localization file
- Small tweaks in code_area HTML widget
[WIP] fix: clojure util fn expectation
[WIP] fix: remove unnecessary :refer-clojure clause
[WIP] fix: util fn parse-pos-int
new: include clj-time dependency
[WIP] new: localization/locale fn to get the current Locale
[WIP] new: first attempt at using clj-time for timestamp formatting
[WIP] new: display formatted timestamps (and original as tooltip)
[WIP] new: globally make username cells link to user profile page