Basic support for cmml
Content Directory Abstraction

This introduces the content directory abstraction.
CMML elements are replaces by with pseudo tags
with the name of their content directory.
fix bug in WikiRawINput
Merge branch 'refactoring' of github.com:TU-Berlin/mathosphere2 into refactoring
Merge branch 'master' into refactoring
1) removed MathMLCan as Intellij library (using custom wikisphere branch)
2) moved CMMLinfo, resources, and test into utils folder
3) deleted SectionMapperTest.java, SectionTuple, and SectionMapper
(replaced by DataPreprocess)
4) deleted WikiProgram
5) fixed exception not thrown in XMLHelper

Conflicts:
	math-tests.iml
	src/main/java/de/tuberlin/dima/schubotz/fse/MainProgram.java
	src/main/java/de/tuberlin/dima/schubotz/fse/mappers/SectionMapper.java
	src/main/java/de/tuberlin/dima/schubotz/fse/types/SectionTuple.java
	src/main/java/de/tuberlin/dima/schubotz/fse/utils/XMLHelper.java
	src/wikipedia/java/de/tuberlin/dima/schubotz/wiki/WikiProgram.java