Fix linter errors

# Conflicts:
#	lib/contracts/contribution.js
#	lib/contracts/contributor.js
#	lib/contracts/proposal.js
#	lib/kredits.js
#	lib/utils/pagination.js

lib/utils/ipfs.js

@@ -2,8 +2,7 @@ const ipfsClient = require('ipfs-http-client');
 const multihashes = require('multihashes');
 
 class IPFS {
-
-  constructor(config) {
+  constructor (config) {
     if (!config) {
       config = { host: 'localhost', port: '5001', protocol: 'http' };
     }
@@ -11,7 +10,7 @@ class IPFS {
     this._config = config;
   }
 
-  catAndMerge(data, deserialize) {
+  catAndMerge (data, deserialize) {
     // if no hash details are found simply return the data; nothing to merge
     if (!data.hashSize || data.hashSize === 0) {
       return data;
@@ -26,7 +25,7 @@ class IPFS {
       });
   }
 
-  add(data) {
+  add (data) {
     return this._ipfsAPI
       .add(ipfsClient.Buffer.from(data))
       .then((res) => {
@@ -34,7 +33,7 @@ class IPFS {
       });
   }
 
-  cat(hashData) {
+  cat (hashData) {
     let ipfsHash = hashData; // default - if it is a string
     if (hashData.hasOwnProperty('hashSize')) {
       ipfsHash = this.encodeHash(hashData);
@@ -42,21 +41,20 @@ class IPFS {
     return this._ipfsAPI.cat(ipfsHash);
   }
 
-  decodeHash(ipfsHash) {
+  decodeHash (ipfsHash) {
     let multihash = multihashes.decode(multihashes.fromB58String(ipfsHash));
     return {
       hashDigest: '0x' + multihashes.toHexString(multihash.digest),
       hashSize: multihash.length,
       hashFunction: multihash.code,
-      ipfsHash: ipfsHash
+      ipfsHash: ipfsHash,
     };
   }
 
-  encodeHash(hashData) {
+  encodeHash (hashData) {
     let digest = ipfsClient.Buffer.from(hashData.hashDigest.slice(2), 'hex');
     return multihashes.encode(digest, hashData.hashFunction, hashData.hashSize);
   }
-
 }
 
 module.exports = IPFS;