Multiple exceptions when event has no config at all

[jljouannic]

When event has nothing but an id in database, trying to access the app for this id gives various exceptions depending on the missing config parameter.

[jljouannic]

if date, decision_date… are NULL in database:

java.lang.NullPointerException: null
    at java.util.Calendar.setTime(Calendar.java:1770)
    at org.apache.commons.lang.time.FastDateFormat.format(FastDateFormat.java:819)
    at io.cfp.dto.ApplicationSettings.<init>(ApplicationSettings.java:47)
    at io.cfp.controller.ApplicationController.getApplicationSettings(ApplicationController.java:69)
    at io.cfp.controller.ApplicationController$$FastClassBySpringCGLIB$$62265d43.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:651)
    at io.cfp.controller.ApplicationController$$EnhancerBySpringCGLIB$$485f0f35.getApplicationSettings(<generated>)

if open is NULL in database:

org.springframework.orm.jpa.JpaSystemException: Null value was assigned to a property of primitive type setter of io.cfp.entity.Event.open; nested exception is org.hibernate.PropertyAccessException: Null value was assigned to a property of primitive type setter of io.cfp.entity.Event.open