Updated fpdf to the last version (py3 compatible), fix contrib/appconfig

gluon/contrib/fpdf/__init__.py

@@ -4,13 +4,13 @@
 "FPDF for python"
 
 __license__ = "LGPL 3.0"
-__version__ = "1.7"
+__version__ = "1.7.2"
 
-from fpdf import *
+from .fpdf import FPDF, FPDF_FONT_DIR, FPDF_VERSION, SYSTEM_TTFONTS, set_global, FPDF_CACHE_MODE, FPDF_CACHE_DIR
 try:
-    from html import HTMLMixin
+    from .html import HTMLMixin
 except ImportError:
     import warnings
     warnings.warn("web2py gluon package not installed, required for html2pdf")
 
-from template import Template
+from .template import Template