zh_CN/*.lang.php re-worked

The legacy simplified Chinese i18n files from OpenX 2.8 were very much buggy.
These files are translated based on the latest version of en/*.lang.php, and saved with utf-8 encoding.
This is still an imcomplete version. But it is sufficient for working on most daily routines as the 'Default Manager' role.
Untranslated 'Campaign delivery' in openXReports plugin
Add zh_CN translatioin for five plugins

Again, these are incomplete, but are almost enough for daily work.

The five plugins are:
* openXBannerTypes
* openXDeliveryLimitations
* openXInvocationTags
* openXMaxMindGeoIP
* openXReports
Update default.lang.php
Update maintenance.lang.php

correction of czech characters
Update settings.lang.php

correction of czech characters
Initial support for Webm video ads
Bumped version to 1.10.0
Rebuilt plugin
Ref #255 - Updated release notes
Merge pull request #255 from revive-adserver/webm-support

Added support for WebM videos in the IAB Video plugin
Fixed #260
Fixed #261
Cleaned up unused files
Increased midnight sync server delay by up to 20 seconds (now max 30 instead of 10). #231
Merge branch 'master' into 231_greater_midnight_sync_delay

Conflicts:
	RELEASE_NOTES.txt
Merge pull request #264 from revive-adserver/231_greater_midnight_sync_delay

Increased midnight sync server delay by up to 20 seconds (now max 30 ins...
Updated header to replace “report bug” link with “support” link. #263
Merge pull request #248 from chroust/master

correction of czech characters
Updated the read me file for changes in #248.