calibre: Added requirement for python-sip version greater than or equal 4.13.2

This update fixes the following issue for python-sip:
- bnc#793269: calibre doesn't work with newer python-sip version then 4.13.2

Fixed bugs
bnc#793269
openSUSE:12.2/calibre: Bug -- calibre fails to start up
Selected Binaries
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