added info for setting the IP in development.ini

Without manually adding the IP address to
development.ini, h will not be listening on the
right interface.
Heatmap: introducing gapSize parameter.

The clustering algorithm uses this gapSize parameter (it was a constant before) to determine if an annotation is far enough or not from the current bucket position to merge the annotation into this bucket.
As a constant it was set to 180, but now it has a default value of 60 to make the clustering less agressive.
Update annotator-store to 5041bdc (for x-client-id header).

This version allows the x-client-id header in AJAX calls.
Fixes #743.
Added link to contact page in username menu so that users could more easily submit feedback.
Add X-Client-ID as allowed CORS header

Alternative fix for #743
Revert "Update annotator-store to 5041bdc (for x-client-id header)."

This reverts commit 9f7ea374af2f76b78e0e7b4e851c4fea303e5721.
Fix heatmap regression
Update deprecated jQuery.andSelf
Clean up threading management code

The `updateReplies` event is unhelpful spaghetti when we can more
clearly watch the collection of thread children that's kept up to
date by the threading plugin automatically.

Utilize `annotation.thread` more.
Apply same collapse tweaks to search as viewer
Unify layout hierarchy of editor and viewer
whitespace
More noop patching of obsolete Store instances
Defensive and pervasive $event.stopPropagation
Fix collapsed annotation font light/dark difference.
Made numerous tweaks.

+Moved time closer to right hand side of annotation card (closer to triangle).
+Used same style as search x for notifications.
+Fixed time position when "show differences" is checked.
+Revised standalone page.
+Made slight improvements to streams CSS.
+Fixed: top bar on streams should stick to top of page and not float
Revised the stylings for notifications.
Fixed bugs identified by Dan.
Adjusted code style acording to Randall's suggestions.
Avoid duplicate events firing on creation

Some cleanup of the editor hide/show entanglement with creation events
is very desperately needed.

Closes #761