Removed version and milestone keywords.  Added values as keywords since readers are more likely to use values as search terms. Added '1.5.3', 'DITA Open Toolkit', 'Quick Start Guide', and 'DITA-OT'.
Removed version and milestone keywords.  Added values as keywords since
readers are more likely to use values as search terms. Added '1.5.3', 'DITA
Open Toolkit', 'Quick Start Guide', and 'DITA-OT'.

queshaw/dita-ot,queshaw/dita-ot,Hasimir/dita-ot,doctales/dita-ot,shaneataylor/dita-ot,Hasimir/dita-ot,queshaw/dita-ot,dita-ot/dita-ot,doctales/dita-ot,Hasimir/dita-ot,eerohele/dita-ot,dita-ot/dita-ot,infotexture/dita-ot,drmacro/dita-ot,drmacro/dita-ot,jelovirt/muuntaja,robander/dita-ot,zanyants/dita-ot,shaneataylor/dita-ot,eerohele/dita-ot,jelovirt/muuntaja,robander/dita-ot,zanyants/dita-ot,drmacro/dita-ot,dita-ot/dita-ot,eerohele/dita-ot,doctales/dita-ot,queshaw/dita-ot,dita-ot/dita-ot,infotexture/dita-ot,Hasimir/dita-ot,shaneataylor/dita-ot,zanyants/dita-ot,shaneataylor/dita-ot,zanyants/dita-ot,robander/dita-ot,infotexture/dita-ot,dita-ot/dita-ot,doctales/dita-ot,drmacro/dita-ot,shaneataylor/dita-ot,eerohele/dita-ot,jelovirt/muuntaja,robander/dita-ot,robander/dita-ot,drmacro/dita-ot,infotexture/dita-ot,infotexture/dita-ot