changed layout
adjust message list with mobile styles
fix loading spinners
- load first message when loading a folder
- loading next message after delete
override the app content scrolling behavior
correctly position attachment indicator
set active class for current message and remove it from old one
only open next message when deleted message is the current one
do not reload email when clicking same again
lighter color for active message
fix placement of new message dialog
correct wording for new message attachment dialog
Merge pull request #165 from owncloud/layout-change

New 3-column layout