allows to break out of $tw.utils.each

Will improve performance with `$tw.utils.each` callbacks breaking out of
the iteration via `return false;`.
code style revision

thanks, Jeremy... will watch out for that
Add highlight plugin to /dev wiki
Palette tweaks for /dev
External links need a protocol as well?

They don't work for me without 'http://'. Firefox 33.1.1.
missing verb

also added the begining of the sentence to make it clearer, but maybe not necessary.
added object as third parameter to callback
list core descriptions for ModuleType

changed dead links with descriptions ...these are still missing:

* $:/language/Docs/ModuleTypes/allfilteroperator
* $:/language/Docs/ModuleTypes/info
* $:/language/Docs/ModuleTypes/library
Add experimental system tiddler browser
Use a serif font for /dev edition

For variety
Add parameter docs for tabbed toc macro
Merge pull request #1181 from tobibeer/patch-1

list core descriptions for ModuleType
Merge pull request #1145 from tobibeer/allow-to-break-each

allows to break out of $tw.utils.each
Coding style cleanup
Fix link
Add tooltip to browse widget

Fixes #1179
Change new journal docs examples

Fixes #1157
Add "Languages" to tw5.com TOC
Drop "Edition" from language tiddler captions

Makes the TOC look neater
Add a template to the tabbed TOC macro

Fixes #1177