URL Cleanup

- Merge/squash #688
- Exclude all .di, .notation and .uml files whose id's cannot be
  changed.

docs/src/info/changelog.txt

@@ -1,6 +1,6 @@
 SPRING STATEMACHINE CHANGELOG
 =============================
-http://projects.spring.io/spring-statemachine/
+https://projects.spring.io/spring-statemachine/
 
 Issues: https://github.com/spring-projects/spring-statemachine/issues
 

docs/src/info/notice.txt

@@ -4,13 +4,13 @@
 ======================================================================
 
 This product includes software developed by
-the Apache Software Foundation (http://www.apache.org).
+the Apache Software Foundation (https://www.apache.org).
 
 The end-user documentation included with a redistribution, if any,
 must include the following acknowledgement:
 
   "This product includes software developed by the Spring Framework
-   Project (http://www.springframework.org)."
+   Project (https://www.springframework.org)."
 
 Alternately, this acknowledgement may appear in the software itself,
 if and wherever such third-party acknowledgements normally appear.

docs/src/info/readme.txt

@@ -1,6 +1,6 @@
 SPRING STATEMACHINE
 ------------------------
-http://projects.spring.io/spring-statemachine/
+https://projects.spring.io/spring-statemachine/
 
 1. INTRODUCTION
 
@@ -19,6 +19,6 @@ The Spring Statemachine jars files can be found in the 'dist' directory.
 4. GETTING STARTED
 
 Please see the reference documentation.
-Additionally the blog at http://blog.spring.io as well
+Additionally the blog at https://blog.spring.io as well
 as sections of interest in the reference documentation.