modification dimensions, ajout d'un nouveau magazine
Modifications
Merge branch 'master' of https://github.com/tym-network/MyNewsDesigner

Conflicts:
	src/com/mynewsdesigner/composition/ActivityCompositionMag.java
	src/com/mynewsdesigner/main/MainActivity.java
	src/com/mynewsdesigner/persistence/MagazineBDD.java