[Fixes #44784391 and #44456243] HOTFIX: empty report
template not visible
[#43120483] HOTFIX: Switch to postmark for transactional emails
to ensure higher deliverability of emails
Merge remote-tracking branch 'origin/postmark' into staging

Conflicts:
	server/src/main/java/org/activityinfo/client/page/report/NewReportPanel.java
	server/src/main/java/org/activityinfo/client/page/report/template/CompositeTemplate.java
	server/src/main/java/org/activityinfo/server/mail/MailModule.java
	server/src/main/java/org/activityinfo/server/mail/MailSender.java
	server/src/main/java/org/activityinfo/server/util/config/ConfigModule.java
	server/war/WEB-INF/web.xml