There are certain application messages that should be re-used between
the CLI and the GUI. In order to allow such re-usability, we extract out
the application messages used in JavaScript into
`lib/shared/messages.js` as a collection of Lodash `_.template`
templates.
Notice this file doesn't include application messages included in
Angular templates directly since it'd be hard to refactor all of them.
We plan to move to React soon, which will allow moving the remaining
messages very easily.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>