aisman

Direct session 75, Step 1: Fix leftover WinForms TFM/UseWindowsForms settings in Aisman.csproj
- AIM-2453 Remove leftover WinForms TFM/UseWindowsForms and isolate System.Windows.Forms usage

Direct session 75, Step 2: Replace native OpenFileDialog stub with an in-browser server file/folder picker modal
- AIM-2453 Implement in-browser server file/folder picker modal (replace disabled native dialog)

+ Replaced aim-alert-danger for aim-alert--danger classes in html so that the css inheritance works correctly.

+ Removed custom.min.js from being included in the dashboard Index.cshtml in production because it is already part of the dashboard.min.js file and the created class there was clashing with itself, preventing the dashboard to be rendered.