Adds named scopes for users index.
Adjusts images position in filters.
Progress bar style.
Moves test to non-transactional fixtures tests (failure with postgresql).
Fixes spent time column sort for postgresql.
Fixes test conditions.
Removed open/closed percentage on the roadmap.
Adds a test for invalid query statement.
Makes spent time column available on the issue list (#971).
Rails3: model: replace deprecated validate method at watcher model
