Use extractBaseName() now.

And also add ExtractBaseNameWithoutExtension tests.

Replace getFileNameFromPath(f, true/false) with corresponding extractBaseName() and extractBaseNameWithoutExtension().

Calling getFileNameFromPath() for now.

Both windows and unix versions.

This fixes #29.

This fixes #27.

This fixes #25.

Doxygen improve.

moved functions getFileNameFromPath(), getSuffixFromPath(), copyPathToFileName() and extractPath() from files StringTools.{cpp,h} to files FileTools.{cpp,h}

moved functions trim(), replaceString(), splitString() and template functions number2str() and str2number() into namespace BaseLib

Merging BaseLib 1

- remove functions to manipulate file names because they exist in StringTools.h
- move implementations into cpp
- fix type, etc.

Includes references and referenced by graphs, undocumented members, source code and some more.

DOT_FOUND is used by doxygen, but was not set anywhere.