Experiment with homepage speed

[Ed McDonagh]

Database optimisations have only made the loading slower on large databases. Opening this issue to have a quick play.

[Ed McDonagh]

Starting an AJAX version of home. Refs #572

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[Ed McDonagh]

Complete mess at the moment, but committing anyway... Refs #572

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[Ed McDonagh]

Hoorah - working for CT. Refs #572

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[Ed McDonagh]

Hoorah - working for all four modalities Refs #572

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[Ed McDonagh]

Improved the passing of modality information, now an ordered dict with long names. Refs #572

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[Ed McDonagh]

Implemented method to only consider modalities with studies in database. Not tested with suitable databases yet. Refs #572

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[Ed McDonagh]

Corrected links to non-CT modalities. Put profile save behind check for authenticated. Deleted commented out text. Works for less than four modalities. Refs #572

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[Ed McDonagh]

Updated no-study logic Refs #572

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[Ed McDonagh]

PyCharm code reformat Refs #572

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[Ed McDonagh]

PyCharm code reformat Refs #572

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[Ed McDonagh]

Added docstrings. Made it so functions only run if called from AJAX request. Refs #572

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[Ed McDonagh]

PyChar reformat of new functions Refs #572

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[Ed McDonagh]

Adding ref #572 to changes/CHANGES

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[Ed McDonagh]

Fixed some redundant import issues for ref #572

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[Ed McDonagh]

Modifying holding text for initial view of latest study tables as per @dplatten's suggestion. Refs #572

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[Ed McDonagh]

Removed the auto-refresh as per comments in pull request #142 Refs #572

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[Ed McDonagh]

Removed comment about auto-updating Refs #572

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[Ed McDonagh]

Merged in issue572homepage (pull request #142)

Fixes issue #572.

Thank you @dplatten, @LuukO and @tcdewit for your comments.

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[Ed McDonagh]

Reverting the order of the tables on the home page to be as they were before... Refs #572

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