Initial picture upload code. Changed routing for pictures controller.
Fix previous, next button bug; album page number bug.
Rearrange upload pictures view, add vertical 'menu'
Add created, modified columns to Albums table
partial commit: upload picture functionality
Improve UI / layout of pictures section.

Fix "add album" (code to create album folder was missing). Moved
sub-menu to top. Changed functionality to start uploading pictures as
soon as files are chosen.
Add Install-Database script
Add UploadedBy, UploadedAt to Pictures
Fix Get-DatabaseStatus.ps1