New options for european time format in in D3_TIME_FORMAT_OPTIONS (#4364

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* Update installation.rst for Ubuntu 16.04 LTS 

Ubuntu 16.04 by default install python2.7 alongside with python 3.5 and set python2.7 as default. If you have created a virtualenv with python3.5 compilation fails due to wrong python-dev library installed. 

If you install ``python3.5-dev`` the build for the wheel package of  ``cryptography`` run fine.

* Add options in D3_TIME_FORMAT_OPTIONS for non-english Time Format.
Added '%d/%m/%Y' and '%d/%m/%Y %H:%M:%S' as valid drop-down option for Axis Format

superset/assets/javascripts/explore/stores/controls.jsx

@@ -26,9 +26,11 @@ const SERIES_LIMITS = [0, 5, 10, 25, 50, 100, 500];
 
 export const D3_TIME_FORMAT_OPTIONS = [
   ['smart_date', 'Adaptative formating'],
+  ['%d/%m/%Y', '%d/%m/%Y | 14/01/2019'],
   ['%m/%d/%Y', '%m/%d/%Y | 01/14/2019'],
   ['%Y-%m-%d', '%Y-%m-%d | 2019-01-14'],
   ['%Y-%m-%d %H:%M:%S', '%Y-%m-%d %H:%M:%S | 2019-01-14 01:32:10'],
+  ['%d-%m-%Y %H:%M:%S', '%Y-%m-%d %H:%M:%S | 14-01-2019 01:32:10'],
   ['%H:%M:%S', '%H:%M:%S | 01:32:10'],
 ];