Matthew/no identicons

Add display_name to 3pid invite in m.room.member invites

stop generating default identicons. reverts most of 582019f8 and solves vector-web/vector-im#346

Strip address and such out of 3pid invites

We're not meant to leak that into the graph

Fix 500 error when back-paginating search results

We were mistakenly adding pagination clauses to the count query, which then
failed because the count query doesn't join to the events table.

Give the IS a bunch more 3pid invite context

This allows it to form richer emails

This allows it to form richer emails

Include errcode on Internal Server Error

Allow users to change which account a 3pid is bound to

Add commentary for fix in PR #442

Fix a race between started/stopped stream

Skip events that where the body, name or topic isn't a string 

Check whether prev_content or prev_sender is set …

Do the /sync in parallel across the rooms like /initialSync does

Fix typo

Fix typo in sql for full text search on sqlite3

Include approximate count of search results