[TYPO3-mvc] RFC #7653: Add basic calculation capabilities

["Christian Müller [kitsunet]"]

Hi,

This is an SVN patch request.

Type: Bugfix

Bugtracker reference:
http://forge.typo3.org/issues/show/7653

Feature:
Add a view helper that can do basic calculations. This is a first 
version to enable basic calculation. It can do all four basic 
mathematical operators and % (modulo). No operator precedence or 
parenthesis for now, so be careful as this may lead to wrong results. 
Check comments for usage examples.

Solution:
new view helper + basic unit test.

Note:
Diff made against FLOW3 SVN (4632).

-- 
Christian Mueller
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