user should be redirected to login page after session timeout
added login-page="/login" to form-login
removed <security:http-basic /> from /api/** endpoints
fix: submission of saved drafts should take attachments into account
removed deprecated mockServer from SubmissionServiceImplTest
add seen flag to message moved to sent folder after submission
don't duplicate attachments after save draft
remove AttachmentUploadWidget after delete request return 200
Merge branch 'master' into bugfix/attachment
Merge pull request #7 from ksokol/bugfix/attachment

Bugfix/attachment
create MimeMessage always with charset UTF-8. Read BodyParts with their defined mimeCharset or UTF-8 as default
added integrationtest for creating draft message and appending attachment to draft message
fixed incorrect replacing of pre-tag that surrounded incoming new message id after attachment upload was completed
fixed broken test: initialize INBOX before test execution
Merge pull request #8 from ksokol/various-fixes3

Various fixes3
show response in alert box after attachment upload if response does not start with pre-tag
remove pre and noscript fpr new draft message id after attachment upload
bugfix sending draft message to correct recipients
[skip ci] travis ci: deploy master branch on openjdk7
Merge pull request #9 from ksokol/various-fixes3

various-fixes3