Added parameter “isNewspaper” for config_opac.xml

Setting the parameter to “true” for a type results in an additional
button “Next” in the screen “Create new process” which will lead to the
calendar editor.
Fixed white spaces
Added backward compatibility: Handle absent attribute as “false”
Pica field 0500 pos. 2 value “b” is “Zeitschrift / Zeitung”
Merge pull request #92 from matthias-ronge/issue_41_rebased

Merge: [ZM] Neuer DocType “Zeitung” (Fixes #41)