.gitignore file added
Changed local.cfg to candi.cfg.
- The local.cfg should be used by the end-user only (now it is safe
  to pull the current candi updates and keep the local configuration
  files).
- Added "switch-project-to" bash script file.

Changes to be committed:
	typechange: candi.cfg
	deleted:    local.cfg
	renamed:    local-DTM++.toolbox.cfg -> project-DTM++.toolbox.cfg
	renamed:    local-FEniCS.cfg -> project-FEniCS.cfg
	renamed:    local-deal.II.cfg -> project-deal.II.cfg
	renamed:    local-gcc.cfg -> project-gcc.cfg
	renamed:    local-mpi.cfg -> project-mpi.cfg
	new file:   switch-project-to