Moved the right click action for the tree header

See http://issues.umbraco.org/issue/U4-5961
Fix for issue U4-5364 without trying to fix the localization of the error text.
U4-5101: Localize Related Link property editor
U4-5101: Localize Tags property editor
U4-5101: Localize Content Picker property editor
U4-5101: Localize Image Cropper property editor
U4-5101: Localize Grid property editor
Update translations for Grid
Merge pull request #581 from readingdancer/Fix_for_5364_Second_Version

Fix for issue U4-5364 without trying to fix the localization of error msg.
Merge pull request #582 from arknu/propertyeditor-localization

U4-5101: Localize property editors (updated)
Merge pull request #577 from abjerner/patch-4

Moved the right click action for the tree header
bump version
Fixes: U4-5977 The debounce timeout on the main search is too big which produces a lag in searching
Merge branch '7.2.1' of https://github.com/umbraco/Umbraco-CMS into 7.2.1
Fixes: U4-5976 When no Examine indexes exist they are rebuilt at startup, however the rebuilding happens too soon before any Examine event handlers are actually wired up.

Updates examine version to facilitate this. Adds ability to tokenize the {machinename} in an examine index path.
Updates nuspec to have a min examine version of 0.1.58 and prettifies their structure.
moves the local storage logic to the BaseUmbracoIndexer
U4-5929 - support IDN in hostnames
U4-5931 - fix DocType inheritance issue
Fixes U4-5986 Compositions: Possible to get stuck in document type ysod's

#U4-5986 Fixed Due in version 7.2.1