Merge pull request #151 from wgerlach/master

some new stuff
log per workunit input filesize (including predata) in perf.log
log per workunit output filesize in perf.log
Merge pull request #152 from wtangiit/master

log per workunit data size being transfered in performance log
bug fix: showing correct number of 'in-progress' tasks on queue stats monitor
add api GET /job?registered, return all jobs in the queue (including active and suspend jobs)
changed api query for graphical overview
Merge pull request #154 from wtangiit/master

misc
Merge pull request #153 from paczian/master

changed api query for graphical overview
bug fix: releasing permit channel if input file preparation fails
Merge pull request #155 from wtangiit/master

bug fix: releasing permit channel if input file preparation fails