Add ability to set max dimensions of user portrait

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 5.1 EE SP4 (5.1.7), 5.2 EE SP2 (5.2.6)
• Fix Version/s: 5.1 EE SP5 (5.1.8), 5.2 EE SP3 (5.2.7)
• Component/s: Performance
• Labels: None
• Environment: All

Storing scaled images saves disk space and increases performance. Also, styling is made easier if you are guaranteed certain max image dimensions.