Feed histograms provide more data.

Graphs of item activity in a feed now include details about data values.
Merge branch 'master' of github.com:RomanSixty/Feed-on-Feeds
Fix feed-detail.php tagging.

The tag field has been isolated into its own form, and now responds to key events properly.  The feed-detail.php page will no longer unexpectedly reload instead of submitting a request to add a new tag with a carriage-return.
Use prototype.js framework for feed-detail.php actions.

Replaced inline js with scripted observe() hooks, for tag-setting interactions.

Also try to handle form submissions.
Retain and report the most recent status of a feed update.

If a feed fails to update, the reason will be stored in the newly-added column 'feed_cache_last_attempt_status' in FOF_FEED_TABLE.  The new function fof_db_update_attempt_status() will set and clear the value.

Fixed some of the SimplePie error-checking to use the public error method rather than the internal error property.

Irregular statuses are now indicated in the sidebar feed icon slot, as well as on the feed detail page.
Fixed MySQL db migrations.

MySQL still doesn't like single quotes.  Table migrations should work now.
Use feed-specified image for icon, if available.

Use the image specified by a feed's metadata, falling back to the feed-site's favicon.

Added some additional checks to the data returned by the external favicon service.
Merge pull request #13 from thylacine/master

deal with more errors from feed updates and feed-image
Internalized feed favicon fetching.

Locate and cache favicons from feed sites without relying on an external service.
This is still a bit rough around the edges, but seems to be functional.
Fixes to FavIcon handling.  Image cache now behaves more like cache.

A feed update will re-fetch the feed image if the current image cache file does not exist on disk.

Quelled 'undefined offset' notices arising from using list()=explode() to parse strings.
Check more variables for null values before trying to use them.
Simplified link-element processing.
FavIcon absolute urls are now constructed correctly.

Removed redundant fetch when storing favicon data into cache.
Removed third-party favicon handling.

The new favicon class seems to be working well enough, so the vestiges of the old external fvicon.com service have been excised.
FavIcon now requests plainly encoded responses from urls.

PHP's http-stream dingus doesn't seem able to automatically handle compressed content-encodings, so as a quick fix FavIcon now requests that all responses be uncompressed.
Fix OPML import for URLs with entities in them (although there is a deeper problem)