Get rid of the various ids on the web interface

This ticket is a migrated Trac ticket [2988](http://trac.buildbot.net/ticket/2988)

People contributed to the original ticket: @djmitche, @sa2ajj, `benoit.allard@...`
Ticket created on: `Oct 29 2014`
Ticket last modified on: `Sep 06 2015`

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I do not think that we should leak ids in the web interface. They are internal data representation details, and the user shouldn't be bothered with them.

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_Comment from_: @sa2ajj
_Date_: `Oct 29 2014`

Can you provide a list of potential candidates?

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_Comment from_: @dustin
_Date_: `Sep 06 2015`

These should be replaced with slugs (#2635). That bug has a good list.