webcontentedit: Better checks for vim usage

Using a full path would not detect vim (/usr/bin/vim).
Also, we can detect if EDITOR=vi but the vi is a symlink to vim.

weboob/applications/webcontentedit/webcontentedit.py

@@ -21,6 +21,7 @@
 import os
 import tempfile
 import codecs
+from distutils.spawn import find_executable
 
 from weboob.core.bcall import CallErrors
 from weboob.capabilities.content import CapContent, Revision
@@ -73,7 +74,8 @@ class WebContentEdit(ReplApplication):
 
             params = ''
             editor = os.environ.get('EDITOR', 'vim')
-            if editor == 'vim':
+            # check cases where /usr/bin/vi is a symlink to vim
+            if 'vim' in (os.path.basename(editor), os.path.basename(os.path.realpath(find_executable(editor) or '/')).replace('.nox', '')):
                 params = '-p'
             os.system("%s %s %s" % (editor, params, ' '.join(['"%s"' % path.replace('"', '\\"') for path in paths.iterkeys()])))