Bugfixes

• Fixed bug in connection module that raised UnicodeDecodeError, improved logging and ignored unicode conversion issues
• Fixed context loading from default values of templates overwriting system defined variables in device admin
• Fixed default template selection not updating after changing backend field in device admin
• Fixed JSONSchema widget to enable working with a single schema
• Fixed related configuration not getting updated after template "default_values" are changed
• Fixed bug which caused the unsaved changes alert in device admin when location of device is present
• Fixed bug replacing manually entered device information with empty string
• Fixed multiple requests for fetching default template values in device admin

Security

• Patched security bugs in internal HTTP endpoints which allowed to obtain UUID
  of other organizations and other sensitive information