Using lexicon in the glosser and other spreadsheet fixes

@Kedersha  I made some fixes for the most recent bugs you found

* numbers in glosses #1499 
* periods in glosses #1498 
* readonly users can read the data #1497 
* comment only users can read and comment the data #1120 
* tags should be normal on all templates (the full template was not updated to match mcgill and yale templates) #1489 

Please test here: 
http://appdev.lingsync.org/