Update setting name, document it in the readme.

Author: Kami

README.md

@@ -224,6 +224,9 @@ COMP_EXECUTABLES = [
     ('myexe', 'L'),
 ]
 ```
+* `COMPARISON_COMMIT_TAGS: Defines a list of tags to display on the comparison page. This comes
+  handy when there are a lot of tags. It defaults to ``None`` which means display all the available
+  tags.
 
 ### VCS Provider Specific Settings
 

codespeed/settings.py

@@ -78,12 +78,12 @@
                          #     ('myexe', '21df2423ra'),
                          #     ('myexe', 'L'),]
 
-COMPARISON_TAGS = None  # List of tag names which should be included in the executables list on
-                        # the comparision page.
-                        # This comes handy where project contains a lot of tags, but you only want
-                        # to list subset of them on the comparison page.
-                        # If this value is set to None (default value), all the available tags will
-                        # be included.
+COMPARISON_COMMIT_TAGS = None  # List of tag names which should be included in the executables list
+                               # on the comparision page.
+                               # This comes handy where project contains a lot of tags, but you only want
+                               # to list subset of them on the comparison page.
+                               # If this value is set to None (default value), all the available tags will
+                               # be included.
 
 TIMELINE_EXECUTABLE_NAME_MAX_LEN = 22  # Maximum length of the executable name used in the
                                        # Changes and Timeline view. If the name is longer, the name

codespeed/tests/test_views_data.py

@@ -193,7 +193,7 @@ def test_get_comparisonexes_tag_name_filtering(self):
         self.assertExecutablesListContainsRevision(executables[self.project], rev_v6)
 
         # Only a single tag should be included
-        with override_settings(COMPARISON_TAGS=['v4.0.0']):
+        with override_settings(COMPARISON_COMMIT_TAGS=['v4.0.0']):
             executables, exe_keys = getcomparisonexes()
             self.assertEqual(len(executables), 1)
             self.assertEqual(len(executables[self.project]), 2 * 2 + 2 * 1)
@@ -207,7 +207,7 @@ def test_get_comparisonexes_tag_name_filtering(self):
                 executables[self.project], rev_v6)
 
         # No tags should be included
-        with override_settings(COMPARISON_TAGS=[]):
+        with override_settings(COMPARISON_COMMIT_TAGS=[]):
             executables, exe_keys = getcomparisonexes()
             self.assertEqual(len(executables), 1)
             self.assertEqual(len(executables[self.project]), 2 * 2)

codespeed/views_data.py

@@ -119,11 +119,11 @@ def getdefaultexecutable():
 
 
 def getcomparisonexes():
-    comparison_tags = getattr(settings, 'COMPARISON_TAGS', None)
+    comparison_commit_tags = getattr(settings, 'COMPARISON_COMMIT_TAGS', None)
 
     all_executables = {}
     exekeys = []
-    baselines = getbaselineexecutables(include_tags=comparison_tags)
+    baselines = getbaselineexecutables(include_tags=comparison_commit_tags)
 
     for proj in Project.objects.all():
         executables = []