improve design for new message and reply, bring fields together
send mail loading feedback: show spinner and disable elements
fix sending reply
hide deleted mails right away for better feedback and less loading time
even better placement of send buttons, inside the text boxes
remove loading feedback from new message form after sent, so the form is usable again
Merge pull request #77 from owncloud/design-newmessage-reply

improve design for new message and reply, bring fields together
Merge pull request #81 from owncloud/better-deletion

hide deleted mails right away for better feedback and less loading time
slide up current open message on opening another one instead of just fade out
visibly distinguish links
- adding icons for download anf save to files
- show human file size
design improvements for attachments
adding id and mime to attachments

Conflicts:
	js/mail.js
	templates/index.php
different templates for single and multiple attachments
fixing wrong html
more design improvements for attachments, tweak button placement
implement attachment download
adding mime icon to attachment list
fix layout of attachment download button and file type icon
fix download button