Fix issues discovered after dewiki deployment

* "Sort by" dropdown would always display "Relevant" because in the value it was attempting to set, ASC/DESC is uppercase & the dropdown's values were lowercase
* The "discuss on talk page" template text contains a blockquote, whose tags were incorrectly being htmlentities'ed

Change-Id: I2793e87886c9aab8f3971e390962d24adfbaade8
Merge "Fix issues discovered after dewiki deployment"