megred conflict
Added convenient method for checking if relation method exists
Using `.present?` instead of negating `.nil?`
Added translation to Russian
Update for Spree 1.2.x
Remove unused & incorrect copy/pasted code.
Use 1-1-stable branch.
Add instructions to delete relations

If the Relation Type is destroyed, makes sense do delete the relations,
otherwise it will crash.
added dutch translations
Update to make it work on 1.3

Adding icon to sidebar link
Update Versionfile and gemspec.
Add pt-BR translation thanks to @lolcode. [Fix #47]
Allow 1.3.0.rc1 to be used.
Update gemspec for stable 1.3.x release.
added es.yml translations
bumping for master version
Promo is now part of Core. [Fix #52]
fixes markup on 'new relation type' button
Merge branch 'fix-markup-on-new-relation-type-button' of https://github.com/jsqu99/spree_related_products
fixes markup on 'new relation type' button

Fixes #54