Some minor changes in images and output of getpot
Added ability to merge contents of slidesets (closes #4273)
Merge pull request #4274 from aeslaughter/merge-contents-4273

Merge contents
Add off-diagonal Jacobian entries for GluedContactConstraint ref #4720
Merge pull request #4271 from bwspenc/constraint_offdiag

Add off-diagonal Jacobian entries for GluedContactConstraint
Fix include guards (#4200)
Merge pull request #4282 from dschwen/fix_4200

Fix include guards