Adding ipdb snippet

ipdb is not in the standard library, but every descent developer should use it...
Correcting set_trace() statement
ipdb snippet.
Fold markers snippets in all.snippets. Patch by Von Welch.
Improvements to the puppet snippets by Nikola Petrov.
Added UltiSnips_SnippetsInCurrentScope(). Patch by Jorge (skeept)
do not expand tabs in snippet files.
Missing closing curly brace
Updated to also correctly specify the user type
Merge pull request #80 from pjfoley/patch-1

Missing Curly Brace in Puppet Snippet File
Merge pull request #75 from ravl1084/testing

Add snippet for ledger and BibLaTeX
Merge pull request #71 from lazerscience/master

Adding ipdb snippet
Buffer local overwrite for snippet directory. Patch by jszakmeister.
TestCase for b1191617 and slightly more stable way to execute python in test cases.
Comment blocks with link to Puppet doco
Removed superfluous line in the snippet
Re-arranged Lanugage section so it is alphabetized
Re-arranged Types section so it is alphabetized
Added puppet function snippets
Removed empty lines in the section block comments