Add font-style went lost during css-cleanup
Added datasource usage to details-view
Display errors (in case), new screenshots and minor UI changes
* added health section to details with disk and datasource infos
* fixed health display when application is DOWN
add function to remove offline apps
Create SpringBootAdminClientAutoConfiguration only when URL is set
Merge branch 'master' of github.com:joshiste/spring-boot-admin into spring-boot-1.2.0

Conflicts:
	pom.xml
	spring-boot-admin-example/pom.xml
	spring-boot-admin-server/pom.xml
	spring-boot-starter-admin-client/pom.xml