Add various always-ignore extensions, files, and folders to `.gitignore`

.gitignore

+# Numerous always-ignore extensions
+*.diff
+*.err
+*.orig
+*.log
+*.rej
+*.swo
+*.swp
+*.vi
+*~
+*.sass-cache
+
+# OS or Editor folders
 .DS_Store
-js/min
+Thumbs.db
\ No newline at end of file
+.cache
+.project
+.settings
+.tmproj
+*.esproj
+nbproject
+*.sublime-project
+*.sublime-workspace
+
+# Komodo
+*.komodoproject
+.komodotools
+
+# Folders to ignore
+.hg
+.svn
+.CVS
+.idea
+
+# Misc
+js/min