[xwiki-notifications] [Issue] Created: (XWIKI-1983) "Version $request.rev2" displayed in the version compare interface

[Sergiu Dumitriu (JIRA)]

"Version $request.rev2" displayed in the version compare interface
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                 Key: XWIKI-1983
                 URL: http://jira.xwiki.org/jira/browse/XWIKI-1983
             Project: XWiki Platform
          Issue Type: Bug
          Components: Templates, Skins & User Interface
    Affects Versions: 1.2 RC2
            Reporter: Sergiu Dumitriu
             Fix For: 1.2 RC3


When not selecting a "from" or "to" version and displaying the version compare, the code assumes the parameters are always there, and compares some null objects.

It should behave like this:
- If no "from" and "to" versions are chosen, make a diff between the last 2 versions
- If no "from" is chosen, compare between "to-1" to "to"
- In no "to" is chosen, compare between "from" and "from+1".

-1 and +1 should take into consideration the "show minor edits" option.

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