Fix typo

Thanks @giffmex
Move the wikilink regexps into global config
Fix link dragging to text editors

We were just adding double square brackets if the title contains
spaces. We should be adding them if the title is not a valid wikilink.
Add 2px rounded corners to tiddlers and tabs

An experiment; comments welcome.
Move docs for 5.1.5 release
Release note updates
Adjust 1px error on sidebar tab positioning
Add introduction video
Let people know about the translators edition
Docs tweaks
Docs tweaks
Update readme
Version number update for 5.1.5
Adjust 5.1.5 release date
Fix type "importer" should be "exporter"
Merge pull request #1151 from malgam/patch-1

Fix typo "importer" should be "exporter"
Preparing for 5.1.6
Fix problem with edit-bitmap widget static rendering

The ‘introduction’ edition contains an edit-bitmap widget that was
failing under Node.js because the fake dom doesn’t support canvas.
Add Dutch TiddlyWiki blog post
Adjust default dropdown width

To avoid text of exporter descriptions overflowing on Firefox.

We need a better solution. On Chrome, nested popups resize to fit their
content, without being constrained by the parent width.