logic: maven project setup

* added option to create a Coati project from a Maven POM file
* show list of indexed file paths in maven project setup
* use FileManager to detect indexed files in project setup (except cdb)
* added Maven path to preferences window and added path detectors.
* fixed: QtDialogView::hideStatusDialog now also hides loader in status bar.
* refactored ProjectType

fortune cookie message = If you continually give, you will continually have.

src/lib/settings/CxxProjectSettings.cpp

@@ -23,6 +23,31 @@ CxxProjectSettings::~CxxProjectSettings()
 {
 }
 
+ProjectType CxxProjectSettings::getProjectType() const
+{
+	if (!getVisualStudioSolutionPath().empty()) // I think this is crap. VS solution path is not used anymore.. so vs projects are handled like cdb projects
+	{
+		return PROJECT_CXX_VS;
+	}
+	else if (!getCompilationDatabasePath().empty())
+	{
+		return PROJECT_CXX_CDB;
+	}
+	else
+	{
+		switch (getLanguage())
+		{
+		case LANGUAGE_C:
+			return PROJECT_C_EMPTY;
+		case LANGUAGE_CPP:
+			return PROJECT_CPP_EMPTY;
+		default:
+			return PROJECT_UNKNOWN;
+		}
+	}
+	return PROJECT_UNKNOWN;
+}
+
 bool CxxProjectSettings::equalsExceptNameAndLocation(const ProjectSettings& other) const
 {
 	if (other.getLanguage() == getLanguage())