[core][fix #29] Throw ApplicationUnreachableException if the application has been redeployed.
Conflicts:
	core/src/main/java/fr/putnami/pwt/core/mvp/rebind/ProxyViewCreator.java
[code-editor][fix] Wrong Css name used
Merge branch 'master' into 1.1.x

Conflicts:
	core/src/main/java/fr/putnami/pwt/core/mvp/rebind/ProxyViewCreator.java