#1043: When assigning issues to a release, comment logs ID rather than name

Hook in to redmine to show the proper release name under the comments when assigning and moving between releases.
translate items that are not translated yet
Merge pull request #1060 from okapies/patch-1

translate untranslated items in ja locale file
Support for float story points when issue edit

On backlogs page predefined float value of story points is supported but on issue page not yet
Update to support icalendar 2.x
Merge branch 'releaseNameRatherThanNumber' of https://github.com/csogilvie/redmine_backlogs into csogilvie-releaseNameRatherThanNumber
Merge branch 'patch-2' of https://github.com/freedayko/redmine_backlogs into freedayko-patch-2