Upgrade Cloud Foundry Gradle plugin to 1.0.3.
Enhance fallback options for /questions page

This commit:
* enhances the caching strategy for SO REST client
* shows a decent page when SO API is unavailable
Upgrade to Boot 1.1.2
Fix json mapping to get github username

When binding the json from github get-single-user call to Map<String, String>, it was
throwing JsonMappingException. This was because the response json contains nested hash
in "plan" field.
In this commit, instaed of binding the entire json to a map, only read the name field from
JsonNode to avoid specific type binding.
Merge pull request #433 from ttddyy/team-importer-json-parsing

Fix json mapping to get github username
Add link to Spring IO platform project page

Fixes #434
Merge pull request #432 from philwebb/spring-boot-112

Upgrade to Boot 1.1.2
Merge branch 'cf-deploy' of github.com:scottfrederick/sagan into scottfrederick-cf-deploy

Conflicts:
	build.gradle
Merge branch 'scottfrederick-cf-deploy'

Fixes #418
Use Spring IO platform 1.0.0.RELEASE

Sagan uses now Spring IO platform 1.0.0.
See http://platform.spring.io/platform/ for more details.

Fixes #417