Adding osm intermediate guide

Adding rst for intermediate osm (module 3 - 6)
updating images and screenshots for QGIS-InaSAFE sd4cp materials

Changing all screenshots into QGIS 1.8 and InaSAFE 1.2
start adding qgis-inasafe beginner sd4cp materials

adding module 200-209
Merge pull request #68 from emirhartato/master

Adding osm intermediate and qgis-inasafe beginner sd4cp materials