Conflicts:
	bbb-common-message/src/main/java/org/bigbluebutton/common/messages/Constants.java

changed possible values for inactivity_deadline to (1 minute; 6 hours), and inactivity_timeleft to (30 seconds; 30 minutes); changed client strings related to inactivity

Conflicts:
	bbb-common-message/src/main/java/org/bigbluebutton/common/messages/Constants.java

used the following command line to find and remove:
```
for i in `find resources/ src/ -name "*.png" -o -name "*.jpg" -o -name "*.jpeg" -o -name "*.svg" -o -name "*.gif"`; do j=$(basename $i); if [ `grep -I "$j" . -R | wc -l` == 0 ]; then rm -f $i; fi; done
```

revert to the previous implementation of the column width distribution in the user list, which is much simpler

Better handling no webcam scenarios. Reverted to the old disabling button logic because I couldnt justify myself any other way

Included metadata reading at server. Setting meeting timeleft and deadline as meta_inactivity-timeleft and meta_inactivity-deadline on create params