added additional safety measure, which we can remove when releasing

Conflicts:
	src/openms/source/METADATA/PeptideIdentification.cpp
removed hopefully all 'RT' and 'MZ' metavalues

Conflicts:
	src/openms/source/METADATA/PeptideIdentification.cpp
	src/tests/class_tests/openms/source/TOFCalibration_test.cpp
	src/topp/FileInfo.cpp
removed hopefully all 'RT' and 'MZ' metavalues

Conflicts:
	src/openms/source/METADATA/PeptideIdentification.cpp
	src/tests/class_tests/openms/source/TOFCalibration_test.cpp
	src/topp/FileInfo.cpp
removed sysinfo remnants
minor optimizations to DTAExtractor
changes after rebase onto develop
replaced remnant DoubleReal
replaced remnant DoubleReal
fixed tabs
Merge pull request #790 from cbielow/fix_pepRTMZ2

Remove 'RT' and 'MZ' metavalues from PeptideIdentification
[FIX] AASequence::fromString now throws a ParseError instead of just
setting valid to false
Merge branch 'develop' into feature/AASequence_refactoring

Conflicts:
	src/tests/class_tests/openms/source/IdXMLFile_test.cpp
	src/tests/class_tests/openms/source/MascotXMLFile_test.cpp
	src/topp/PhosphoScoring.cpp