* Removed m_pDensityOfStatesCalculator variable from MolecularComponent as this will be read in from XML and use directly.
* Modified gDensityOfStates::calcDensityOfStates() so that it reads the DOSCMethod by itself.
* Further prepared for other DOS calculator plugin
* Reformat code to remove tabs. Please check the setting of tabs and spaces and make sure to use Ctrl+K Ctrl+F to
remove tabs in the code before check-in.