merge framework foundation

bugfix: submit disabled when not select env

remove framework-parent and refactor apollo-demo codes

version to 0.6.3

update framework foundation to 1.5.2

reduce config service locator retry times to 2

simplify demo

add spring boot configuration properties example

bugfix: Invalid printf-style format string

bugfix: still lock branch when master modified

output start up log to console

0.6.2

bugfix: do not unlock branch's lock when redo operate

minor fix for Spring

1. make ApolloAnnotationProcessor run as late as possible
2. make PropertySourcesProcessor run as early as possible
3. fix PropertySourcesProcessor initialization logic to support multple
Spring contexts

add content type for compatibility issue

add html mime type as utf-8

unlock namespace when is redo operation