Compatibility with Piwigo 12

#10 #11 ability to decide which non image file extensions can be downloaded as multiple size (based on the representative picture).

For example, imagine you have a PDF file. Piwigo has created a JPEG representative picture. By default, the Download by Size plugin will have no effect on this file. If you permit PDF to be downloaded as multiple size, the download button will show the list of multiple size. The XXS to XXL sizes will be sizes from the representative, the original will be the PDF file itself.

$conf['download_by_size_permitted_non_picture'] = array('tif', 'tiff', 'pdf');

#8 compatibility with PHP 7.2+
#9 ability to download a web size version of a representative picture (with direct URL to action.php, useful on custom theme)

#7 ability to disable download for sizes if "high definition" is disabled for a user. Add this to your local configuration : $conf['download_by_size_follow_enabled_high'] = true;

display dimensions (widthxheight) for Original size

compatible with Piwigo 2.8 but not compatible with download of formats (if available)

New languages:
* Cambodia (ខ្មែរ [KH])

Checked compatibility with Piwigo 2.7

New languages:
* Japanese (日本語 [JP]), thanks to ddtddt
* Mongolian (Монгол хэл [MN]), thanks to Ulzii
* Serbian (Српски [SR]), thanks to gpopac

Checked compatibility with Piwigo 2.6

New languages:
* Brezhoneg [FR], thanks to yves.kerleguer
* Persian (فارسی [IR]), thanks to ipic
* Lithuanian (Lietuvių [LT]), thanks to vilisas
* Norwegian (Norsk bokmål [NO]), thanks to abbamust
* Romanian (Română [RO]), thanks to smarmie
* Tamil (தமிழ் [IN]), thanks to saitjaleel

Compatibility with theme Stripped

6 new translations.

New advanced options for file name pattern (based on latest improvements introduced in Batch Downloader 2.0.2), ie $conf['download_by_size_file_pattern'] accepts 4 functions (escape, upper, lower, strpad)

New translations:

* Czech (Česky) by webprostor
* Traditional Chinese (中文 繁體) by unsetlay

New parameter $conf['download_by_size_file_pattern'] (by default '%filename%_%dimensions%'). You can use %id%, %filename%, %author%, %dimensions%.

New translations:

* Spanish (Español) by AlbertParera
* Catalan (Català) by AlbertParera
* Bulgarian (Български) by turnokopa

First version.

Already 20 translations:

* English by plg (that's me)
* French (Français) by plg (that's also me)
* Greek (Ελληνικά) by bas_alba
* Polish (Polski) by K.S.
* Honk-Kong (中文香港) by hkdigit
* Turkish (Türkçe) by LazBoy
* Russian (Русский) by Konve
* Latvian (Latviešu) by agrisans
* Estonian (eesti) by Eggy
* Dutch (Nederlands) by Kees Hessels
* Italian (Italiano) by Ericnet
* Chinese (简体中文) by winson
* Finnish (suomi) by Juhi24
* Hungarian (Magyar) by samli
* Danish (Dansk) by Kaare
* Portuguese (Português) by ANO
* Slovak (Slovensky) by dodo
* German (Deutsch) by fs101299
* Portuguese Brazil (Português Brasil) by flaviove
* Vietnamese (Tiếng Việt) by dummy