Initial branch commit

Big UI changements to mimic some good design ideas from Outlook
See changelog.txt for further info
Removed remaining CVS files
Add eclipse project files and gitignore
Fix divider ratios in properties
Update version in changelog and ressources
Fix a NPE when empty autosave.mbx
Fix animated loading browser icon thread to stop fine due to incoherent SWT event counts
New format for non current year mails
New and fixed strings
Fixed todos
Updated changelogs
clean repo
clean bis
Fix SWT error when no config.properties file is available
Updated .gitignore
Fix drag & drop not working on mail table tree view
Fix some methods access & prevent OS drawing of the hover
Changed some variables names and improved locking efficiency
Use executors
Fixed many findbugs warnings