build doc
add blank attr to the document link
show path to ps-dir and run-dir
improved visibility
fix host_spec
fix scheduler_wrapper_spec

- add 'bash -l -c' to commands
- add 'XSUB_BEGIN' to the output string
trivial bug fix
set style to treebtn of analyzers
optimize query

- when Run#result is large, runs_list_datatable tend to be slow.
  - to avoid performance degradation, get runs without result field
update README
Merge branch 'Development' of github.com:crest-cassia/oacis into attribute_for_ps