WIP: Add multiaccount support
Use "octet-stream" as content-type + force download
Remove unused code

This is something we can worry about later. Kill it.
Merge pull request #113 from owncloud/always-force-download

Use "octet-stream" as content-type + force download
[tx-robot] updated from transifex
Merge pull request #114 from owncloud/removeUnusedCode

Remove unused code
comment out 'all accounts' switcher for now
fix styling of account switcher dropdown
Merge pull request #106 from owncloud/multiple-accounts

Add multiaccount support
only load first account on initial load, not unfinished unified inbox
don't try to load accounts if there are none
- migrate last old style ajax call to AccountsController
- catch error on mail delivery
- save message to sent folder
save sent message to 'Sent' folder
add server side handling of attachments while sending email
attachments are taken from the files app
Introduce namespace Http
- adding backbone
- adding model and view for attachment management on new mail composer
proper build multipart message holding the attachments
proper build multipart message holding the attachments
correct posiiton for attachments
implement attachment delete