Added following features to the PDF report:
 
1) Combine individual PDF reports into one single report;
2) Landscape layout of the page; 
3) Fit TIC Graph and metrics values table in one page; 
4) Remove "Index = n" from the TIC graph; and 
5) Add creation date/time in the report.
Merge branch 'master' of https://github.com/CTMM-TraIT/trait_proteomics_qc_tool.git

Conflicts:
	ProteomicsQCReportViewer/src/nl/ctmm/trait/proteomics/qcviewer/utils/ReportPDFExporter.java