API Change: a commit in ding_periodical needs this one. backwards compatible.

Sum up total counts for issues
Fix: Parse alma response properly when periodical issues are partly under way and arrived.

Alma has a compositeholding for under way and one for arrived, previously the arrived ones data would overwrite the data from under way.
Merge branch 'refactor' into merge

Conflicts:
	lib/AlmaClient/AlmaClient.class.php