Project configuration improvements.

.editorconfig

@@ -1,2 +1,13 @@
+[.*]
+charset: utf-8
+end_of_line: lf
+
 [*.go]
 indent_style = tab
+
+[*.js]
+indent_style = space
+indent_size = 2
+
+[Makefile]
+indent_style = tab

.gitignore

@@ -1,2 +1,6 @@
 build
 devel.env
+
+# Ignoring for IDE-specific files
+.idea/*
+.dir-locals.el