Fix for #1529 - Pre-Computation of username for better customization and performance.

Impact Areas

• Schedule Reports (receipients email)
• Group users fetched in listview
• User module Create / Update
• SMSNotifier
• Report sharing
• User privileges file computation
• Title shown on user icon in top bar
• Username in email print view
• USername in ics file sent for calendar invite
• User calendar (shared users list)
• Account tab in Campaigns module
• User signatur added in the email
• Helpdesk module - Getting list of open tickets
• Dashboard - Potential related default widgets and custom widgets
• Reports list view
• All module assigned_to field
• Users CRUD
• Owner field in all the views
• Fromname in workflow email task
• Username shown in Scheduled import result email
• Username sent in MailManager email
• Mobile - Fetching accessible user list for module.