Patch bomb from Unity Technologies

[Mads Kiilerich]

Hi

At Unity Technologies we are using Kallithea internally. Many of our 
changes have been upstreamed, some have not. It is changes that make 
Kallithea work for our scale and our way of doing things but these 
changes should however also be of general use. Some of the changes have 
been used in production for more than a year, some only after the 
upgrade to Kallithea.

Please dig into 
https://bitbucket.org/conservancy/kallithea/pull-request/4/patches-from-unity/commits 
and give some feedback.

All the changes should be self contained and review-able one by one. It 
is changes that have different topics, but splitting them up and 
reordering them further would probably not add much value.

/Mads
Unity Technologies