Make sure PivotByDimension respects original segment query parameter when fetching intersected tables by segment.

Adding new PivotByDimension DataTable filter that can pivot a report by (almost) any dimension. The filter can pivot reports by their subtable dimension and can also pivot by other dimensions (by using segments).

Notes:

- in the UI, only pivoting by subtable is supported
- change to CSV DataTable renderer so column names w/ commas & quotes can appear in text
- change to XML DataTable renderer so column names w/ invalid XML characters can be rendered (bit of an iffy change, XML format needs an overhaul I think)
- includes new config option 'pivot_by_filter_enable_fetch_by_segment'
- includes additions to component metadata classes (ie, Report/Dimension)

[automatic translation update] Updated 131 strings in 6 languages (cs, da, de, el, pl, sv)

refs #6122 Adding CORS header to Overlay controller methods since they are meant to be loaded from other domains where the overlay takes place.

#6234 Allow charset complement in content-type

Received text/plain;charset=UTF-8 should match with an expected text/plain

Replace header() with Common::sendHeader() when possible

Add option to disable menu title change after click position in top menu.

Log Analytics: new parameter --download-extensions to override list of files tracked as downloads

#6232 getExpiresHeaderForFutureDay should be static

Php serializer was not serializing arrays by default. 

Refs #6078, extract factory logic from Report::factory and move to ComponentFactory utility class. Also reuse in Dimension to allow creating Dimension instances by human readable string IDs.

Refs #6078, extract factory logic from Report::factory and move to new ComponentFactory utility class and reuse in Dimension to allow creating Dimension instances by human readable string IDs.

refs #4996 make sure we always track same content name and piece in an interaction and also have to use default values

refs #4996 tests should now work in case Piwik is installed in a subdirectory although could not really test it. Also encode redirect uri