Move some settings from .local.vimrc to .editorconfig

Closes #865 as WONTFIX. It is better to have one .editorconfig then a number of 
editor-specific files.

.editorconfig

@@ -0,0 +1,20 @@
+# editorconfig ini file
+# Check out http://editorconfig.org for a list of plugins for different 
+# IDEs/text editors that support this file. Vim plugin to support this:
+#
+#     http://www.vim.org/scripts/script.php?script_id=3934
+#     https://github.com/editorconfig/editorconfig-vim
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = tab
+# Despite promise somewhere alignment is done only using tabs. Thus setting 
+# indent_size and tab_width is a requirement.
+indent_size = 4
+tab_width = 4
+charset = utf-8
+
+[*.rst]
+indent_style = space

.local.vimrc

@@ -4,9 +4,5 @@
 "
 " [1]: http://www.vim.org/scripts/script.php?script_id=3393
 " [2]: https://github.com/thinca/vim-localrc
-setlocal noexpandtab
-" Despite promise somewhere alignment is done only using tabs. Thus setting 
-" &tabstop is a requirement.
-setlocal tabstop=4
 let g:syntastic_python_flake8_args = '--ignore=W191,E501,E121,E122,E123,E128,E225,W291,E126'
 let b:syntastic_checkers = ['flake8']