[jbosstools-dev] datestamps from blog filename no longer required

[Max Rydahl Andersen]

Hey,

Just a heads up that when you add a blog to jbosstools-website you no 
longer
[1] need to put the date of its release into the filename, but simply 
put it in the header
like this:

```
:page-date: 2015-06-25
```

This has three advantages:

* no need to rename the file when publishing does not happen on that 
exact date
* no date in the urls makes the urls "timeless" (more likely to be 
viewed/clicked according to 
http://blog.arungupta.me/write-effective-seo-friendly-blogs/)
* shorter urls

I'm not changing the old blog posts urls, but going forward we should 
just use plain text urls.

I've updated the blog templates etc. so as long as you follow the docs 
everything will be fine ;)

[1] https://issues.jboss.org/browse/JBIDE-20144

/max
http://about.me/maxandersen