allow using execute command on html lists
improve specification of Execute on Lists
Merge pull request #93 from johnbhurst/master

Gradle Wrapper, and IDEA files in .gitignore.
Caching run results.

Conflicts:
	src/main/java/org/concordion/internal/FixtureRunner.java
Fixed 1.7v1.5 compile error
Added tests

Conflicts:
	src/test/resources/spec/concordion/results/Results.html
Made the cache handle circular dependancies and parallel runs of the same test.
Fixed compile error due to cherry pick from a branch with an additional class.
Merge pull request #94 from drtimwright/master

Caching run results on 1.4.5-SNAPSHOT branch
Merge pull request #92 from john-ross/master

Execute command for HTML lists
Merge branch 'master' of https://github.com/concordion/concordion