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Remove incorrect slice parameter.

Remove incorrect slice parameter, which made the ! (not) prefix fail to return any results.
Added test for !limit (not limit)

Added test for !limit (not limit) to ensure bug change works
Merge pull request #172 from Brennall/FilterLimitBug

Filter limit bug
Merge pull request #171 from natecain/cla2

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Use Blob api to generate data links in download saver

This should fix crashing on large wikis under chrome
  see chrome bug: https://code.google.com/p/chromium/issues/detail?id=103234
This should also speed up generating the download html by a couple of seconds
  it avoids repeatedly marshalling the base64 encoded href string across the sandbox boundary
  it avoids some time and memory consumed by "large" dom manipulation
  major remaining delay is in encodeURIComponent
    TODO: consider using iconv on the server
    TODO: consider async invocation of regular expressions to avoid client "lockup"

Conflicts:
	core/modules/savers/download.js
Small revision to previous commit, avoids double encoding.

We don't need to encodeURIComponent at all when using blob links.
The data never goes into the dom directly, just a guid reference.

This makes saving with blobs very fast!
Merge pull request #173 from natecain/BlobAPI

Blob api
Docs updates
Missing semi
New deployment script
Correct example
Add a read only theme that hides editing controls
Docs updates
Search over tags as well as the title and text fields