Adding missing spaces on Dashboard

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Factoring out content item cloning to ContentManager

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#19915: Fixing search settings typo

Work Item: 19915

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#19916: Fixing raw Projector layout typo

Work Item: 19916

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#19911: Fixing mismatched file names in Orchard.Indexing

Work Item: 19911

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rename : src/Orchard.Web/Modules/Orchard.Indexing/Services/IIndexService.cs => src/Orchard.Web/Modules/Orchard.Indexing/Services/IIndexingService.cs
rename : src/Orchard.Web/Modules/Orchard.Indexing/Services/IndexService.cs => src/Orchard.Web/Modules/Orchard.Indexing/Services/IndexingService.cs
#19921: Media - fixing stereotype name typo.

Work Item: 19921

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Defining default file size limit for IIS 7 and greater (64 MB)

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#19907: Implementing Media and Media Library fields import/export

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Refactoring the Grid layout so it's compatible with grid systems using <div>

Required Change: All previous layouts based on Grid will have to set
table/tr/td to behave as the previous version. The tags are no more set by
default.

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#19924: Moving FormValueRequiredAttribute to Orchard.Mvc, removing duplicate class declarations and updating usages.

Work Item: 19924

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#18951: Adding bulk feature operations to Features screen.

Work Item: 18951

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#18951: Removing checkboxes from features that should not be disabled or enabled.

Work Item: 18951

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#19937: Fixing the Description-text for Mode in ResizeFilter (Orchard.MediaProcessing)

Work item: 19937

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Removing superfluous spaces from Workflows/Content Activity descriptions, found
by Benedek

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Fixing Rules copypasta T-strings in Workflows AdminController, found by Benedek

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#19935: Fixing spec flow default modules

Work Item: 19935

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extra : rebase_source : 400bcb48cdcb7bb218b8ccf0e409790f6e280a09
#19936: Fixing ignored urls in Orchard.OutputCache

Work Item: 19936

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Fixing typos in Taxonomies and Workflows

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extra : rebase_source : dcf609dbc4674c37e2ae2f026369490b369a6c8a
Removing empty Views folder from Taxnomies

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extra : rebase_source : b1f4ae6667e28416d95b025e153fda28db759316
#19924: Adding back obsolete FormValueRequiredAttribute to the Orchard.Core.Contents.Controllers namespace to prevent 3rd party modules from failing to compile that still use this attribute.

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