Avoid possible timing issue when loading hosts and host groups.
Refs #24.
Ensure that hosts and host groups are available locally.
Refs #24.
Handle URLs without protocol prefix (http://).
Fix crash if a HTTPS URL is selected but the Trust all SSL certificates option is not checked.
(Re-)Initialize HTTP client connection whenever the settings change.
Perform Zabbix login on settings close only if the settings have actually been changed.
Show „login successful“ toast only if necessary.
Add possibility to use SSL without trusting certificates blindly.
Widgets: show connection error if login is incorrect.
Error message for untrusted SSL certificate.
Update version info to 2.1.1(24).