Change the drop out time for when a network is down.

[mantid-builder]

This issue was originally TRAC 4710

Original Reporter: Robert Whitley

Recently '\musr\data' network folder has been down. During that time Mantid took a very long time to start because '\musr\data' was one of the managed directory paths.

Users have told me that during this period they thought Mantid was crashing because it took such a long time.

Investigate why Mantid looks through the managed directory paths at start-up and see if you can change the time taken before ignoring the path and giving a suitable error message.

[mantid-builder]

@NickDraper (2012-04-30T14:15:46):
Moved at end of release 2.1

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@NickDraper (2012-08-10T12:45:12):
http://www.mantidproject.org/Release_Notes_2_2_Full_List

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@NickDraper (2012-10-28T11:42:52):
Moved to release 2.4

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@NickDraper (2013-01-28T09:23:33):
Moved at the code freeze for release 2.4

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@NickDraper (2013-04-29T09:50:06):
Moved to r2.6 at the end of r2.5

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@NickDraper (2013-07-26T13:59:10):
Moved to the Backlog after the code freeze for R2.6

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@NickDraper (2014-02-14T11:07:57):
bulk move to assigned at the into of the triage step

[NickDraper]

This has been notably improved a long time ago