style(): use 4 space indents

Author: Awk34

Diff for: templates/app/.editorconfig

@@ -9,7 +9,7 @@ root = true
 
 # Change these settings to your own preference
 indent_style = space
-indent_size = 2
+indent_size = 4
 
 # We recommend you to keep these unchanged
 end_of_line = lf

Diff for: 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": ["error", 2],                                     //specify tab or space width for your code
+        "indent": ["error", 4],                                     //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, {