Bug Fix: Default Site now works properly
Minor Change: Extract Site.getBaseUrl to the folder, if present
Post attachments are uploadable and sortable
Merge branch 'develop' of github.com:ist-dsi/bennu-cms into develop

Conflicts:
	src/main/java/org/fenixedu/bennu/cms/domain/Post.java
ignoring files generated by intelliJ
slug creation does not create a menu funcionality automatically
Posts pagination