merge upstream commit: Gitignore: Update to ignore additional ide/editors

.gitignore

-## Generic ignorable patterns and files
+## Files related to minetest development cycle
+/*.patch
+# GNU Patch reject file
+*.rej
+
+## Editors and Development environments
 *~
-.*.swp
-*bak*
-tags
+*.swp
+*.bak*
+*.orig
+# Vim
 *.vim
-
-## Files related to minetest development cycle
-*.patch
+# Kate
+.*.kate-swp
+.swp.*
+# Eclipse (LDT)
+.project
+.settings/
+.buildpath
+.metadata
+# Idea IDE
+.idea/*