do trasaction only if we have data
initial pass at saving attributes from generic form

drill down to attrib show works

update attribute values from deployment & node role
add some helpful information about a common error
fix typo
add some helpful information about a common error
fix typo
correct docker logic as requested by @victorlowther
fix bad code in bootstrap default
Merge branch 'master' of https://github.com/opencrowbar/core