@alexch: You can hide that from custom css. For that, you can just add the following css in “Appearance => Customize => Theme Options => Custom CSS Options” box:
.post-navigation { display: none; }
To translate any theme text, you need to create .po and .mo files from .pot file you will find inside languages folder “catch-responsive/languages/catchresponsive.pot”. You can use free software form http://poedit.net/.
Let me know if you are interested in translating then I can email you more details and also we will include that file in language folder in next version. So, it will stay in theme when you update as well.
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