Merge pull request #1 from peter-tackage/model

Model
Basic drawing of "from" circles - not tested
Model cleanup
Model cleanup
DOM parser for xml
Merge branch 'master' of https://github.com/peter-tackage/refuge into model

Conflicts:
	app/src/main/java/com/moac/android/refuge/model/Demography.java
	app/src/main/java/com/moac/android/refuge/model/RefugeeFlow.java