Merge with UltiSnips repo (added fnct to merge)

- UltiSnips: Moved alias snippets from sh to all.

- Aliases: Snippet, commit message.
- Vim: Map fold method, preview and line break to leader keys.

UltiSnips/sh.snippets

@@ -0,0 +1,8 @@
+snippet evr "Var with escaped quotes" i
+\"$${1:var}\"
+endsnippet
+
+snippet vr "Var with quotes" i
+"$${1:var}"
+endsnippet
+