Bug fixes

Small check on array index for image navigation in order to prevent some error alert.

Bug fixes and improvements. Compatible with the latest Domain module.

Order status fix
minor code style fixes

Highlights:

• Authentication- and HTTP client configurations stored in states instead of config.
• If authentication fails on Credentials configuration UI (admin/config/apigee-edge/settings) you can see an error message about the possible reason of the failure and a "Debug information" details pane with detailed debug information. (Authentication information is sanitized.)

v1.3

• Added "Taxonomy Term" entity handler to resolve hierarchy issues
• Fixed export for changed pools sometimes being ignored
• Fixed cross sync re-exporting the same entity again when being changed
• Fixed "overwrite" checkbox sometimes not being saved for nested paragraphs

Reviewed code.
Added logic for paragraphs and autocomplete(tags style)