config: Update config files with comment about 'vcs.backends' setting.

configs/development.ini

@@ -529,7 +529,13 b' vcs.hooks.protocol = http'
 vcs.server.log_level = debug
 ## Start VCSServer with this instance as a subprocess, usefull for development
 vcs.start_server = true
+
+## List of enabled VCS backends, available options are:
+## `hg`  - mercurial
+## `git` - git
+## `svn` - subversion
 vcs.backends = hg, git, svn
+
 vcs.connection_timeout = 3600
 ## Compatibility version when creating SVN repositories. Defaults to newest version when commented out.
 ## Available options are: pre-1.4-compatible, pre-1.5-compatible, pre-1.6-compatible, pre-1.8-compatible

configs/production.ini

@@ -498,7 +498,13 b' vcs.server = localhost:9900'
 vcs.server.log_level = info
 ## Start VCSServer with this instance as a subprocess, usefull for development
 vcs.start_server = false
+
+## List of enabled VCS backends, available options are:
+## `hg`  - mercurial
+## `git` - git
+## `svn` - subversion
 vcs.backends = hg, git, svn
+
 vcs.connection_timeout = 3600
 ## Compatibility version when creating SVN repositories. Defaults to newest version when commented out.
 ## Available options are: pre-1.4-compatible, pre-1.5-compatible, pre-1.6-compatible, pre-1.8-compatible