XML Import

unfinished
prototyping
prototyping2

working prototype.
problems:
- range also counts the commands (file2 tag2: [44:65], tag3: [82:88])
- skips commands in file1: <pre>, <span>, <a href>
prototyping
TEIContentHandler

added TEIContentHandler
added 31 nonlinebreakingElements
- further testing required to determine whether more should be added
Merge branch 'f27' of https://github.com/catmadevel/catma-core into f27

Conflicts:
	src/de/catma/document/source/contenthandler/XMLContentHandler.java
Merge branch 'graphdbindex' into f27
prototyping intrinsic markup collections
intrinsic markup collection xml and tei
a bit of cleanup
rendering of xml source docs