Fix deploy flashbang on ground; fix retained audio global toggle mode; clean-up scripts for retained audio

[jwebmeister]

• Fix deploy flashbang on ground
• Remove "belay" (cancel held order)
• Added "em" as alternative for "them", e.g. "restrain em"
• update to dragonfly 1.0.0-rc2-dev105
  • fixed audio during "cold mic" being prepended to retained audio (if enabled) when using global toggle mode (I don't think this was affecting speech recognition, but it's fixed now regardless)
• added powershell scripts to aid with cleaning retained audio (if enabled)
• .gitignore "retain/" folder, which is used to store audio + metadata if setting is enabled