fixed faxes that fail and get stuck in sending status. Now, they will be reverted back to the Trying state and attempted again

Improved CDRs by @nemerald-voip in https://github.com/nemerald-voip/fspbx/pull/30; optimized related calls query by @nemerald-voip in https://github.com/nemerald-voip/fspbx/pull/38; Auto-receptionist by @nemerald-voip in https://github.com/nemerald-voip/fspbx/pull/66

added new device vendors by @nemerald-voip in https://github.com/nemerald-voip/fspbx/pull/62; Fixed a bug for Ringotel connection settings; Fixed FusionPBX bug for wrong status of certain CDR calls

fixed Select All function on the Registrations page

Feature-v0.9.21 by @nemerald-voip in https://github.com/nemerald-voip/fspbx/pull/58

Added ability to pair existing Ringotel organizations by @nemerald-voip in https://github.com/nemerald-voip/fspbx/pull/55

Bugfix-0.9.18 by @nemerald-voip in https://github.com/nemerald-voip/fspbx/pull/54

Updated and improved Ringotel API integration

Full Changelog: https://github.com/nemerald-voip/fspbx/compare/v0.9.13...v0.9.15

Bugfux-0.9.13 by @nemerald-voip in https://github.com/nemerald-voip/fspbx/pull/43