[Meta] Release v1.5

[msm-cert]

This time we have a help of actual programmers, so expect increased reliability and a better UI.

The list looks overwhelming, but many issues should be relatively straightforward (refactoring, small tweaks). The biggest feature is the planned infrastructure for automated indexing.

Database and performance:

• Create proper enums for Job statuses #370
• Optimize db.get_job_matches to paginate on the DB side #372
• Store job files in the database instead of ursadb iterators #381
• Refactor database handling in /api/job endpoint #394
• Add the information about match context to the database #395
• Initialize the database automatically when starting mquery #402

User interface:

• Show matched strings in matched samples #38
• Ellipsis hides matched-rules badges #196
• Better handling of dataset not found error #204
• Implement some "hint" banners in the admin panel #307
• Show the information about matches in the frontend. #396
• Migrate away from create-react-app #397

Indexing and agent management UI

• [META] Indexing and agent management UI #410

This is a very big undertaking that will incidentally solve the following issues:

• Create designated config console for admins #242
• Create a reindexing daemon. #142
• Indexing samples automatically when added /samples folder #220
• Scan Certain Directories #223

Bugfixes and chores:

• Make Dockerfiles more cacheable #75
• Bump frontend dependencies, and ensure that the project still works #400
• Bump backend dependencies, and ensure the project still works #401
• UrsaDB process gets killed on big set of files #222 (this will probably be closed as unreproducible)
• Improve the installation procedure #232
• Use the default config of auto-formatting tools #238 and Consider sorting imports with isort #256
• Refactor the role names #351