Fixes for the following Bugs
* 379927 - Uploading a file revision reports success - but actually fails
* 354468 - Some characters are not displayed in RSS
* 379499 - Windowless video causes some Videos not to show
* 383089 - PHONE_HOME blocks client display when there is no direct internet connection
* 388292 - MySQL PHP Extension error message is unclear
* 388592 - White text will not show in region preview
===New Features===
====Configure RSS Update Interval====
[https://blueprints.launchpad.net/xibo/+spec/rss-update-interval Blueprint]
Added an option to Ticker Media items to allow you to configure how long the RSS feed should be cached for before a new version is pulled from the server. Can be set to 0 which causes the client to pull a fresh copy each time the Ticker media is used.
====Embed RAW HTML====
[https://blueprints.launchpad.net/xibo/+spec/embed-html Blueprint]
We've seen alot of interest in embedding bits of external websites in Xibo layouts (eg Youtube videos, weather widgits etc). Adding support for a RAW HTML media type was a near 0 code change to the client so we've implemented it here.
====Ticker Speed====
[https://blueprints.launchpad.net/xibo/+spec/ticker-scroll-speed Blueprint]
Xibo tickers automatically adjust their scrolling speed so that the whole feed is shown in the time the feed is allowed to be on screen (within certain sensible limits). However people still wanted to be able to adjust the speed of the tickers, so as it was a very minor code change we've implemented that option.
====Ticker Single====
[https://blueprints.launchpad.net/xibo/+spec/ticker-scroll-speed Blueprint]
Xibo has always supported breaking an RSS feed in to a sequence of individual items and showing them sequentially, however the GUI options to build such a media item were hidden. We've unhidden them in this version.
====Improved installer debug output====
Added additional log output in the event of the installer/upgrader failing to run an SQL query.
