Merge pull request #413 from xandros6/frims

Importing commits from Xandros repo.
Close #397.
Close #398.
Close #399. 
Close #400. See #410, #412 .
Close #401. 
Close #402. See #411 .
Close #403. 
Close #404. 
Close #405. 
Close #406. 
Close #407. 
Close #408.
Fix #411, used values instead of subtotal
Fix #410: also escaped special characters
Added english labels also in es and fr files
Fix #409: Tiers are into child DIV of "cell-content" DIV: added
descendant empty check before apply N/A
Fix #414
Fix #412