[fix] dont set a default theme

frappe/website/website_theme/standard/standard.json

@@ -1,6 +1,6 @@
 {
- "apply_style": 1, 
- "apply_text_styles": 1, 
+ "apply_style": 0, 
+ "apply_text_styles": 0, 
  "creation": "2015-02-19 13:37:33.925909", 
  "custom": 0, 
  "docstatus": 0, 
@@ -9,16 +9,16 @@
  "footer_color": "", 
  "footer_text_color": "", 
  "heading_style": "", 
- "heading_webfont": "Fira Sans", 
+ "heading_webfont": "", 
  "idx": 17, 
  "link_color": "", 
- "modified": "2016-08-03 02:19:05.701516", 
+ "modified": "2016-08-03 06:59:24.539564", 
  "modified_by": "Administrator", 
  "module": "Website", 
  "name": "Standard", 
  "owner": "Administrator", 
  "text_color": "", 
- "text_webfont": "Fira Sans", 
+ "text_webfont": "", 
  "theme": "Standard", 
  "top_bar_color": "", 
  "top_bar_text_color": ""