* Update to Gitea 1.10.0+dev-427-gf9aba9ba0
* Add swagger-codegen-maven-plugin to automate code generation
* Regenerate swagger classes
* Fix tests compilation caused by API changes
* Drop Java 7 support
It is EOL and not supported on Travis anymore. Intead, test against Java 11
* Fix Gradle script using nonexistent 'configurations.compileClasspath'
* Update Gradle to 5.6.2 to add support for Java 11
* Add missing javax.annotation-api to build.gradle to fix compilation on Java 11
Marat Radchenko