Backport necessary changes to 1.0.x

Makefile

autograde-service/pom.xml

...n/java/ch/epfl/autograde/AutogradeServiceApplication.java

.../java/ch/epfl/autograde/api/v1/model/ImagePullPolicy.java

...va/ch/epfl/autograde/api/v1/service/AutogradeService.java

...h/epfl/autograde/api/v1/service/KubernetesJobService.java

...va/ch/epfl/autograde/api/v1/service/MoodleWebService.java

.../epfl/autograde/properties/AutogradeConfigProperties.java

...java/ch/epfl/autograde/properties/AutogradeJobConfig.java

...ch/epfl/autograde/properties/AutogradeJobImageConfig.java

.../ch/epfl/autograde/properties/AutogradeManagerConfig.java

.../ch/epfl/autograde/properties/MoodleConfigProperties.java

autograde-service/src/main/resources/application.properties

...rade/config/properties/AutogradeConfigPropertiesTest.java

...tograde/config/properties/MoodleConfigPropertiesTest.java

autograde-submission-manager/pom.xml

moodle-assignsubmission-autograde/version.php

pom.xml