Fix an import
Update image constants (use the path to icon) and IMG_xxx
Add the collapse and expand in the tree view
Change splash for rcp training
Add target platform project and .target file from P2
Fix accent problem
Change dependencies for new xtend
Add swtbot in the p2 target platform
Update RCP application (main perspective, initial size, name) and
associated launch configuration (for mac)
Remove the minimum execution environment in Manifest, useless and
causing problem for product export.