r2758 - fixContext(): use spotEntity() instead of generateEntityAutoTags()

r2758  - fixContext(): use spotEntity() instead of generateEntityAutoTags()
 - generateEntityAutoTags(): expect a cell instead of key in 'ipv4net', ignore 'ipaddress'
 - listCells(): pass the whole 'ipv4net' cell to autotags generator, so it doesn't have to re-get extra data
 - spotEntity(): idem
 - etype_by_pageno: don't list 'ipaddress', it breaks things
 - getIPv4NetworkInfo(): sayonara