Xm.tracker

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- Fix buttons on the 'select task for unassigned entry' form. [mark]

- Reinstate class on 'book to task' button which triggers the
KSS. [reinout, mark]

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- Moved "eXtremeManagement: View Tracker" permission to
Products.eXtremeManagement as we do not actually use that permission
in the xm.tracker package. [maurits]

- Display a warning in a task when it is orphaned (removed, in the
wrong state). [maurits]

- CSS changes to the tracker interface to visually distinguish tasks with and
without bookings. [simon]

- Added project-grouping of tasks in the tracker view. [simon]

- Moved timer display to a separate viewlet. And added kss-refreshing of that
viewlet in two places so that the timer (and especially the tooltip showing
the booked hours) gets updated on stopping the timer, on editing the time of
an entry and on adding entries. [reinout]

- Fixed http://plone.org/products/extreme-management-tool/issues/79 by
not using unicode in one small place. [reinout]

- Added KSS and template changes to allow the 'seconds' part of the tracker
timer to be individually styled. (This relates to kss.plugin.timer r72297.)
[simon]

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- Show the total hours booked plus tracked today as a tooltip on the
timer. [maurits+simon]

- Do not store the portal_url in the task_url; copying a Data.fs from
production to a development machine would give you a url to the
tasks on the production site, which is not handy and can be
dangerous. After this change you need to remove existing tracker
tasks and add them again unfortunately. [maurits+simon]

- Bug fix: when the tracker pointed to a task with a Discussion Item
(comment) in it you would get: 'TypeError: a float is required'.
[maurits]

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- Bug fix: a booking for 75 minutes would get stored as 1 hour and
75 minutes instead of 1 hour and 15 minutes. [maurits]

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- Removed egenix-mx-base from the install_requires of setup.py as it
is not easy_installable. Improved docs/INSTALL.txt to explain about
how to install mx.DateTime. [maurits]

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- First version. [maurits, reinout, jladage, simon]