Fix linter errors

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

lib/serializers/contributor.js

@@ -12,7 +12,7 @@ class Contributor {
   * @method
   * @public
   */
-  static deserialize(serialized) {
+  static deserialize (serialized) {
     let {
       name,
       kind,
@@ -49,7 +49,7 @@ class Contributor {
   * @method
   * @public
   */
-  static serialize(deserialized) {
+  static serialize (deserialized) {
     let {
       name,
       kind,
@@ -64,7 +64,7 @@ class Contributor {
       "@type": "Contributor",
       kind,
       name,
-      "accounts": []
+      "accounts": [],
     };
 
     if (url) {
@@ -76,7 +76,7 @@ class Contributor {
         "site": "github.com",
         "uid": github_uid,
         "username": github_username,
-        "url": `https://github.com/${github_username}`
+        "url": `https://github.com/${github_username}`,
       });
     }
 
@@ -84,7 +84,7 @@ class Contributor {
       data.accounts.push({
         "site": "wiki.kosmos.org",
         "username": wiki_username,
-        "url": `https://wiki.kosmos.org/User:${wiki_username}`
+        "url": `https://wiki.kosmos.org/User:${wiki_username}`,
       });
     }