Alignment to latest CDI 1.1/JTA 1.2/Interceptor 1.2 specs

[frenchc]

I did not want to change the current FAQ entries for interceptors and AFTER_SUCCESS observers in my fork before asking:

It seems both sections do not align to the latest CDI 1.1/JTA 1.2 and Interceptor 1.2 specs. The observer section should probably refer to @transactional, interceptors should mention @AroundConstruct and LifeCycle interception.

[pmuir]

+1 the FAQs need reviewing for CDI 1.1, and perhaps a special since: header needs adding? I'll try to do that now.

[pmuir]

Ok, I added support for adding since: 1.1 etc. to the front matter. @frenchc feel free to update/add FAQ for the issue as needed.