Separate folders for books

Registered by Pranav Salunke

XML files of Training gudies are mashed under the doc folder. This makes it
difficult to understand the layout of the repository. To make it easier to
manage the content, each guide will be classified under its folder.The XML files
will lie under the respective book. This should address keep the repository sane
and also easier to manage. For example, `Associate Guide's` current location is
`../doc/training-guides/` which is same for `Developer Guide`. It will be moved
to `../doc/training-guides/associate-guide/` and
`../doc/training-gudies/developer-guide/` respectively.

Blueprint information

Status:
Complete
Approver:
Sean Roberts
Priority:
Undefined
Drafter:
Pranav Salunke
Direction:
Needs approval
Assignee:
Pranav Salunke
Definition:
Approved
Series goal:
Proposed for juno
Implementation:
Implemented
Milestone target:
milestone icon icehouse-rc1
Started by
Pranav Salunke
Completed by
Pranav Salunke

Related branches

Sprints

Whiteboard

(?)

Work Items

Work items:
Create required folders: DONE
Move Lab content to basic-install-guide folder: DONE
Move Common content to Common folder: DONE
Move Associate guide's content to its folder: DONE
Move Operator guide's content to its folder: DONE
Move Developer guide's content to its folder: DONE
Move Architect guide's content to its folder: DONE
Rename the files. Give them proper names: DONE

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Everyone can see this information.