Better handling of max file upload size according to PHP settings

- Allow unlimited size
- Better parsing of PHP size

Fixes #4896

app/Template/project_file/create.php

@@ -9,7 +9,7 @@
     'labelDropzone'     => t('Drag and drop your files here'),
     'labelOr'           => t('or'),
     'labelChooseFiles'  => t('choose files'),
-    'labelOversize'     => t('The maximum allowed file size is %sB.', $this->text->bytes($max_size)),
+    'labelOversize'     => $max_size > 0 ? t('The maximum allowed file size is %sB.', $this->text->bytes($max_size)) : null,
     'labelSuccess'      => t('All files have been uploaded successfully.'),
     'labelCloseSuccess' => t('Close this window'),
     'labelUploadError'  => t('Unable to upload this file.'),

app/Template/task_file/create.php

@@ -9,7 +9,7 @@
     'labelDropzone'     => t('Drag and drop your files here'),
     'labelOr'           => t('or'),
     'labelChooseFiles'  => t('choose files'),
-    'labelOversize'     => t('The maximum allowed file size is %sB.', $this->text->bytes($max_size)),
+    'labelOversize'     => $max_size > 0 ? t('The maximum allowed file size is %sB.', $this->text->bytes($max_size)) : null,
     'labelSuccess'      => t('All files have been uploaded successfully.'),
     'labelCloseSuccess' => t('Close this window'),
     'labelUploadError'  => t('Unable to upload this file.'),

app/Template/task_import/show.php

@@ -13,7 +13,9 @@
     <?= $this->form->label(t('CSV File'), 'file') ?>
     <?= $this->form->file('file', $errors) ?>
 
+    <?php if ($max_size > 0): ?>
     <p class="form-help"><?= t('Maximum size: ') ?><?= is_integer($max_size) ? $this->text->bytes($max_size) : $max_size ?></p>
+    <?php endif ?>
 
     <?= $this->modal->submitButtons(array('submitLabel' => t('Import'))) ?>
 </form>

app/Template/user_import/show.php

@@ -30,7 +30,9 @@
     <?= $this->form->label(t('CSV File'), 'file') ?>
     <?= $this->form->file('file', $errors) ?>
 
+    <?php if ($max_size > 0): ?>
     <p class="form-help"><?= t('Maximum size: ') ?><?= is_integer($max_size) ? $this->text->bytes($max_size) : $max_size ?></p>
+    <?php endif ?>
 
     <?= $this->modal->submitButtons(array('submitLabel' => t('Import'))) ?>
 </form>