Raynes/tentacles — pull request #62 by notnoopci (2014-11-26 15:46:01+00:00)
Title: protect against empty contents

Fetching the content of an empty file through the API result into out of bounds exception:

```
java.lang.ArrayIndexOutOfBoundsException: -1
at clojure.data.codec.base64$pad_length.invokePrim(base64.clj:53)
at clojure.data.codec.base64$decode.invokePrim(base64.clj:146)
at clojure.data.codec.base64$decode.invoke(base64.clj:144)
at tentacles.repos$decode_b64.invoke(repos.clj:417)
at tentacles.repos$decode_b64.invoke(repos.clj:422)
at tentacles.repos$contents.invoke(repos.clj:442)
```