Rewrite load generator with personas

[resamsel]

User

• Looks at own profile + activity (admin) - Paul
• Registers user
• Updates user - Gerald
• Unregisters user (delete)
• Creates access token
• Updates access token
• Removes access token
• Looks at own profile + project list + access tokens + activity - Janine

Project

• Creates project with language and keys (owner)
• Updates project name (owner, manager)
• Removes project (owner)
• Looks at own projects + locales + keys + translations + activity (owner, manager)

Member

• Adds contributor to project (owner, manager)
• Reads all contributors of a project (viewer)
• Updates a contributor of a project (owner, manager)
• Removes contributor from project (owner, manager)

Key

• Creates new key (developer)
• Removes keys from project (developer)

Language

• Creates new language (translator, manager)
• Removes language from project (manager)

Translation

• Translates keys for specific language (translator)
• Creates new keys and translates them for default langauge (developer)

Access Token

• Create an access token
• Read all access tokens of a random user
• Update an access token of a random user
• Delete an access token of a random user