Merge tag 'v0.8' into layout-module

 - tagging version 0.8
when the user saves the layout, the output file shouldn't present the <layout-block> tag - this is just internal to exchange layouts among the participants
fixing the layout manager startup, just like it was done on master
fixing the start-stop camera events matches, so now even if there's no stop video event, the video processing will run smoothly
 - allow passing of configURL in create and join api calls
 - add ability to post config xml for meeting
 - tie tokens to a meeting
 - rename set and get configxml api
 - hash the meeting id with the config xml
translated specific strings to pt_BR
 - remote Flex project files from .gitignore
 add back Flex project files
Added javascript to BigBlueButton.html to validate that javascript, java and flash are enabled before loading the client
bbb-lti(v0.1.1): Added extended mode to support voicebridge, record and duration parameters
bbb-lti(v0.1.1): Added new vie for extended interface
bbb-lti(v0.1.1): Validated Join for extended version
bbb-lti(v0.1.1): Added list of recordings to the extended view
bbb-lti(v0.1.1): Activated actionbar for publish/unpublish and delete recordings
bbb-lti(v0.1.1): Validate recording deletion with javascript
bbb-lti(v0.1.1): Restricted access to actionbar on recordings to only users in a role that can be considered as moderator