Fix scrolling behavior

Always set current story to top, unless it was clicked on, in which case
we only do so if it will be out of view.
Fix JS exception for empty groups.

When you unsubscribe from all feeds in a group, f.Outline is undefined and f.Outline.length dies.
Merge pull request #43 from augustoroman/patch-1

Fix JS exception for empty groups.
Truncate very long story IDs to fit into app engine keys
Halve reader import count

Some large imports are getting memory issues and killing the instance. This
should use less resources and allow those to work.
Move back to GetAll since we are using Limit

The datastore was throwing all kinds of timeout errors on the iterator.
Apparently key len must be strictly < 500
Go up to 2 hour updates
Back to 3 hours - too popular
Attempt to describe go get better
Switch back to iteration code

Why all the timeouts datastore?
Improve feed list style and Improve choosing feed behavior

Signed-off-by: Jorge Cuadrado <kuadrosxx@gmail.com>
Improve scrollbar styles for chrome users

Signed-off-by: Jorge Cuadrado <kuadrosxx@gmail.com>