Merge branch 'release/2013-03-01'
Merge branch 'release/2013-04-09'
Merge branch 'release/2013-04-30'
Merge branch 'release/2013-05-27'
Merge branch 'release/2013-06-24'
bug 962042, history_plot fails when any run has srctime=None, rs=me
Merge branch 'hotfix/bug-962042-history-without-srctime' into develop