Description of problem:
In document list view, clicking the column header "Complete" should sort by the number of "complete". However, if you clicked other columns before, the actual result is sorted by that column instead.
Version-Release number of selected component (if applicable):
Zanata version 3.0.0-SNAPSHOT (20130607-1221)
Steps to Reproduce:
1. Navigate to document list view of any project that has many documents.
2. Click at any other column that make the "Complete" column unsorted.
3. Click at "Complete"
The documents are sorted by the column you choose on step 2.
The documents should be sorted by "Completed".
UI has been changed since 3.3.0
The GWT document list still existed in Zanata 3.5.0-SNAPSHOT (git-server-3.4.1-34-g17ffcd7)
VERIFIED with Zanata 3.5.0-SNAPSHOT (git-server-3.4.1-38-gbf555f5)