Switch web pages to Jamon template engine instead of JSP
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                 Key: HBASE-3835
                 URL: https://issues.apache.org/jira/browse/HBASE-3835
             Project: HBase
          Issue Type: Improvement
          Components: master, regionserver
    Affects Versions: 0.92.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
             Fix For: 0.92.0


Jamon (http://jamon.org) is a template engine that I think is preferable to 
JSP. You can read an interview with some comparisons vs JSP here: 
http://www.artima.com/lejava/articles/jamon.html

In particular, I think it will give us the following advantages:
- Since we'll have a servlet in front of each template, it will encourage us to 
write less inline Java code and do more code in the servlets.
- Makes proper unit testing easier since you can trivially render a template 
and pass in mock arguments without having to start a whole HTTP stack
- Static typing of template arguments makes it easier to know at compile-time 
if you've made a mistake.

Thoughts? I converted the Master UI yesterday and only took a couple hours.

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