adding calculating dala
Merge branch 'intro-analysis' of https://github.com/AIFDR/inasafe-doc into intro-analysis
fixed working data
Fixing some errors in chapter 6-9

Introduction Spatial Data Analysis
Merge branch 'intro-analysis' of https://github.com/AIFDR/inasafe-doc into intro-analysis
Fix warning in .rst files in intro-analysis

map-composer, understanding-inasafe, vector-analysis
Fixing some errors in "Review QGIS"

Intermediate Spatial Data Analysis
fix warnings .rst files on intermediate-analysis

planning-evacuationroute, preparingdata-inasafe
fixed "introduction,basic qgis, qgis plugin, etc"
Merge branch 'intro-analysis' of https://github.com/AIFDR/inasafe-doc into intro-analysis
fix indenting
fix basic qgis and determining idp
Merge branch 'intro-analysis' of https://github.com/AIFDR/inasafe-doc into intro-analysis
fix warnings in some .rst files
fix warnings in .rst files
fix warnigs in vector analysis
fix warnings
fix map-projection, new-vector, raster

introduction
fix merge
Merge branch 'intro-analysis' of https://github.com/AIFDR/inasafe-doc into intro-analysis