refactor job part
add bullet points to mail composer #5
debug required after refactoring
debug attachment saving
add requests for box deletion
refactoring
add a mailbox field to attachments
syntax correction
debug refactoring
build client
Merge branch 'refactoring' into development

Conflicts:
	client/public/javascripts/app.js
add test for box deletion
small debug in case mailboxes are not retrieved
mailbox model: debug + delete related functions
clean request definitions (put them in the right files)
improve mailbox destroy action
cleaning...
add loading indicators
enhance user experience by displaying loading indicators and hiding broken or

useless stuff.
code cleaning