Removed load-on-startup from web.xml as it's not used.
Under Linux's Tomcat, that entry caused Tomcat to throw an exception because it was looking for the corresponding init() method in ProjectServiceImpl.java (which does not exist).
Added logging info about E4MOOC environment variables.
The "Show Code" button now shows an iFrame that has the new server URL (bmse-sandbox).
Better support for different server operating system; using or not using a sandboxed execution environment.
Changed gitignore to ignore Eclipse's .settings folder.
Removed previously committed .settings files.