Import Sakai source into Eclipse

Run the following maven commands in your sakai-src root folder (e.g. /opt/cafe-2.5.x)
This will generate valid eclipse .project and .classpath files from the maven build
```
mvn eclipse:clean
mvn eclipse:eclipse
```
- If you are using the Maven Plugin for Eclipse then you need to also run this:
```
mvn eclipse:m2eclipse
```
Startup eclipse if it is not running
Create a new workspace for Sakai
1. Click on File -> Switch Workspace
2. Enter "WS-Sakai" in place of the default "workspace" directory
3. Click OK (eclipse will restart)
  - The following steps should be done in the WS-Sakai workspace
Add Maven Repository libraries to classpath
- NOTE: This is for backwards compatibility with projects using the M2_REPO variable so it can be skipped
1. Select Window -> Preferences -> Java -> Build Path -> Classpath Variables
2. Add MAVEN_REPO classpath variable with the path to the local maven repository (Sakai 2.4 or lower)
  - The path should be: $USER_HOME/.maven/repository
3. Add M2_REPO classpath variable with the path to the local maven repository (Sakai 2.5 or higher)
  - The path should be: $USER_HOME/.m2/repository
Switch to the Java perspective (Window -> Open Perspective -> Java)
- Make sure you are in the package explorer
Turn off Automatic builds
- Select Project and uncheck Build automatically
Select File -> Import -> Existing Projects into Workspace
1. Enter the full path to the sakai source directory for the root directory
  - This should be something like /opt/cafe-2.5.x if you followed the development setup guide
2. Click Finish to import the selected projects
  - This will take awhile, probably 5+ minutes
3. Clean all Sakai projects
  1. Select Project -> Clean
  2. Select Clean all projects
  3. Check Start a build immediately
  4. Click OK
4. Build All (Project -> Build All)
  - There will be hundreds of warnings, do not worry about these
Turn back on Automatic builds
- Select Project and check Build automatically