docs: update docs structure and nav

docs/mkdocs.yml

@@ -22,11 +22,13 @@ nav:
       - 'Feature Highlights': 'features.md'
   - Installation:
       - 'Installation': 'installation/index.md'
-      - 'Configuration': 'installation/configuration.md'
-      - 'SQL Data Source Configuration': 'installation/configuration-sql.md'
-      - 'Provisioning': 'installation/provisioning.md'
+      - 'Building from sources': 'installation/run_from_master.md'
       - 'Upgrade': 'installation/upgrade.md'
-      - 'Troubleshooting': 'installation/troubleshooting.md'
+  - Configuration:
+      - 'Configuration': 'configuration/index.md'
+      - 'SQL Data Source Configuration': 'configuration/sql_datasource.md'
+      - 'Provisioning': 'configuration/provisioning.md'
+      - 'Troubleshooting': 'configuration/troubleshooting.md'
   - User Guides:
       - 'Getting Started': 'guides/gettingstarted.md'
       - 'Templating': 'guides/templating.md'

docs/sources/configuration/index.md

@@ -58,7 +58,7 @@ Direct DB Connection allows plugin to use existing SQL data source for querying
 database. This way usually faster than pulling data from Zabbix API, especially on the wide time ranges, and reduces
 amount of data transfered.
 
-Read [how to configure](/installation/configuration-sql) SQL data source in Grafana.
+Read [how to configure](/configuration/sql_datasource) SQL data source in Grafana.
 
 - **Enable**: enable Direct DB Connection.
 - **SQL Data Source**: Select SQL Data Source for Zabbix database.

docs/sources/index.md

@@ -17,7 +17,7 @@ this tool better.
 If you have any troubles with Grafana or you just want clarification on a feature, there are
 a number of ways to get help:
 
-- [Troubleshooting guide](/installation/troubleshooting/)
+- [Troubleshooting guide](/configuration/troubleshooting/)
 - Search closed and open [issues on GitHub](https://github.com/grafana/grafana/issues)
 - [Gitter room](https://gitter.im/alexanderzobnin/grafana-zabbix)
 - [Twitter](https://twitter.com/AlexanderZobnin)