Securities
The securities view shows all securities (shares, funds, and options) that have been added manually via the security dialog or through CSV import.
The list can be filtered by security type. Clicking a security name opens the security details page.
New securities can be added by clicking the New security button at the top of the page. Existing securities can be edited or deleted by clicking the icons at the far left of each row. If a security with connected events is deleted, those events are also deleted.
Both when a new security is added and when an existing security is edited, the security dialog opens.
TODO: Describe what to do if a security has changed ISIN. This can possibly be described under CSV import or on a separate page.