Authorization logic.
Changes to users viewmodels.
Merge pull request #3 from davicompu/master

Adding excel feature to: Salary by Faculty Type Report & updated Merit Summary Report
Shared unitofwork across viewmodels per session.
CSS clean up.
Modernizr check.
Optimized metadata by storing locally.
Fixed bug on user viewmodels.
Conditionally display new salary on edit view.
Filter by person's status type id. Fixed bug in unreviewed report.
Revised base salary adjustment report.
Fixed bug on edit user viewmodel.
Pass department id from user index vm to edit vm.
Filter non-active persons from Excel reports.
Solving conflicts when mergin branch
Solving merge conflicts on style
Merging with edit-salary-slider