Don't create directories in ManagerDataPaths
- I discovered tons of ~/Pictures/*/Ruqola directories due to running the tests
- Video and Picture are already created on demand in RocketChatCache::recordingVideoPath and RocketChatCache::recordingImagePath
- Cache is now created on demand in RocketChatAccountSettings::cacheBasePath (once)
- Config is created by QSettings RocketChatAccountSettings::initializeSettings