logic: paths in ProjectSettings relative to file not working directory

This change checks all paths in the ProjectSettings file for relativity and makes them relative to the location of the
ProjectSettings file if necessary. The paths are also correctly saved relative to the file.

src/lib/settings/ProjectSettings.cpp

@@ -20,15 +20,49 @@ ProjectSettings::~ProjectSettings()
 {
 }
 
-std::vector<std::string> ProjectSettings::getSourcePaths() const
+void ProjectSettings::save(const FilePath& filePath)
 {
-	std::vector<std::string> defaultValues;
-	return getValues("source/SourcePaths/SourcePath", defaultValues);
+	moveRelativePathValues("source/SourcePaths/SourcePath", filePath);
+	moveRelativePathValues("source/HeaderSearchPaths/HeaderSearchPath", filePath);
+	moveRelativePathValues("source/FrameworkSearchPaths/FrameworkSearchPath", filePath);
+
+	Settings::save(filePath);
 }
 
-bool ProjectSettings::setSourcePaths(const std::vector<std::string>& sourcePaths)
+std::vector<FilePath> ProjectSettings::getSourcePaths() const
 {
-	return setValues("source/SourcePaths/SourcePath", sourcePaths);
+	return getRelativePathValues("source/SourcePaths/SourcePath");
+}
+
+bool ProjectSettings::setSourcePaths(const std::vector<FilePath>& sourcePaths)
+{
+	return setPathValues("source/SourcePaths/SourcePath", sourcePaths);
+}
+
+std::vector<FilePath> ProjectSettings::getHeaderSearchPaths() const
+{
+	return getRelativePathValues("source/HeaderSearchPaths/HeaderSearchPath");
+}
+
+bool ProjectSettings::setHeaderSearchPaths(const std::vector<FilePath>& headerSearchPaths)
+{
+	return setPathValues("source/HeaderSearchPaths/HeaderSearchPath", headerSearchPaths);
+}
+
+std::vector<FilePath> ProjectSettings::getFrameworkSearchPaths() const
+{
+	return getRelativePathValues("source/FrameworkSearchPaths/FrameworkSearchPath");
+}
+
+bool ProjectSettings::setFrameworkSearchPaths(const std::vector<FilePath>& frameworkSearchPaths)
+{
+	return setPathValues("source/FrameworkSearchPaths/FrameworkSearchPath", frameworkSearchPaths);
+}
+
+std::vector<std::string> ProjectSettings::getCompilerFlags() const
+{
+	std::vector<std::string> defaultValues;
+	return getValues("source/CompilerFlags/CompilerFlag", defaultValues);
 }
 
 std::vector<std::string> ProjectSettings::getHeaderExtensions() const