Fixed deletion of ssh keys (HOME instead of tilda) in bosco_uninstall.

From OSG Jira CAMPUS-110
Fixed wrong reference to user_job_wrapper.sh in Campus Factory.

From OSG Jira CAMPUS-125
Removing OSG_GRID export from the user_job_wrapper in Campus Factory.

From OSG Jira CAMPUS-124
Fixing bug in Campus Factory when CONDOR_IDS does not exist.

From OSG Jira CAMPUS-123
More robust shell recognition in bosco, especially with csh

From OSG Jira CAMPUS-136
bosco_cluster for multiuser installation

Modified bosco_cluster.
If the user does not own the installation disables glideins and campus factory:
- does not change general routing
- no need for password file
- skips glidein creation

From OSG Jira CAMPUS-136
Merge branch 'V7_9-bosco_1_2-branch' into V8_0-branch