Resolve "Display toast message when finalized variant in ongoing analysis has been updated by other user"

Description

See issue #158 (closed) . Went for simplest solution (loadAlleles).

Warning is only given for allele assessments that are updated, i.e. when there is an existing allele assessment in the state from before, or if the alleleassessment in state is not in an inital state. Otherwise, warnings would be given right away when opening a new analysis.

Related issues

#158 (closed)

Notes to review (code/docs/QA)

Tests

General

• Tests have been added that prove my fix is effective or that my feature works
• Related tests have been modified/removed

Hypothesis testing:

• Soak testing has been done
• Distribution between positive / negative cases has been checked

Database

• Includes changes to database schema
• Includes necessary database migrations

Configuration

• Includes changes to configuration
• Includes configuration migration instructions in documentation

Merge checklist

• Self-review of code has been performed.
• Feature review and validation against specification has been performed (if applicable). Apply label: QAdone
• Need for documentation has been evaluated and, if necessary, updated. Apply label: docsdone
• Code and implementation has been reviewed by other core developer (including any changes based on initial review). Apply label: code reviewdone

Closes #158 (closed)