bugfixes
Merge branch 'br1-branch-2.0'

Conflicts:
	Clever_Buy/res/layout/fragment_home.xml
	Clever_Buy/src/it/polito/ai/project/fragment/HomeFragment.java
	Clever_Buy/src/it/polito/ai/project/main/MyHttpClient.java
	Clever_Buy/src/it/polito/ai/project/main/SplashScreen.java
	Clever_Buy/src/it/polito/ai/project/main/UserSessionManager.java