add commit version/hash to build

source/conf.py

@@ -13,9 +13,23 @@
 # serve to show the default.
 
 import sys
+import subprocess
 import os
 import sphinx_rtd_theme
 
+# fetch git version/hash
+subprocess_params = {'stderr': open(os.devnull, 'w')}
+if sys.version_info[0] == 3:
+    subprocess_params['encoding'] = 'utf-8'
+try:
+    __repo__version = subprocess.check_output(["git", "describe", "--tags"], **subprocess_params)
+except subprocess.CalledProcessError:
+    try:
+        __repo__version = subprocess.check_output(["git", "rev-parse", "--short", "HEAD"], **subprocess_params)
+    except subprocess.CalledProcessError:
+        __repo__version = ""
+
+
 html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -65,9 +79,9 @@ author = u'Deciso B.V.'
 # built documents.
 #
 # The short X.Y version.
-version = u'Wiki & Documentation'
+version = u'Wiki & Documentation<br/><small>%s</small>' % __repo__version
 # The full version, including alpha/beta/rc tags.
-release = u'Wiki & Documentation'
+release = u'Wiki & Documentation<br/><small>%s</small>' % __repo__version
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -120,7 +134,7 @@ todo_include_todos = True
 # a list of builtin themes.
 # html_theme = 'alabaster'
 html_theme = "sphinx_rtd_theme"
-html_style = 'css/opnsense.css' 
+html_style = 'css/opnsense.css'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the