[NOP] cleanup
[TOOLS] add to spellcheck
[FIX-#618] fix spelling errors in source files
[FIX] fix compile warnings and increase QT min version to 4.6
Merge pull request #1108 from timosachsenberg/fix/compile_warnings

[FIX] fix compile warnings and increase QT min version to 4.6
[FIX] removed support for multiple id formats in toos without
in_type/out_type sepcified
[FIX] added back MzId support in FileInfo and simplified PeptideIndexer
Merge pull request #1109 from timosachsenberg/fix/remove_multi_id_in_and_output

[FIX] removed support for multiple id formats in tools without
Merge pull request #1102 from OpenMS/fix/fix_spellcheck

Fix/fix spellcheck