noosfero | blocks: make sure limit is integer on get_limit (#558)

[Antonio Terceiro]

Merge Request #558 was merged
Merge Request Url: https://gitlab.com/noosfero/noosfero/merge_requests/558
Project:Branches: danielafeitosa/noosfero:block_limit to noosfero/noosfero:master
Author: Daniela Feitosa
Assignee: 
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