fix(eslint): default to 2-space indents

Author: Awk34

templates/app/.eslintrc

@@ -149,7 +149,7 @@
         "id-blacklist": 0,                                          //blacklist certain identifiers to prevent them being used
         "id-length": 0,                                             //this option enforces minimum and maximum identifier lengths (variable names, property names etc.)
         "id-match": 0,                                              //require identifiers to match the provided regular expression
-        "indent": 2,                                                //specify tab or space width for your code
+        "indent": ["error", 2],                                     //specify tab or space width for your code
         "jsx-quotes": 0,                                            //specify whether double or single quotes should be used in JSX attributes
         "key-spacing": 2,                                           //enforce spacing between keys and values in object literal properties
         "keyword-spacing": [2, {