ctools 7.x-1.10

This is mainly a bugfix and minor features release for ctools 7.x based on work from https://www.drupal.org/node/2554339

One of the major improvements with this release is support for PHP7.

Changes since ctools 1.9:

• ctools 1.10
• #2411353, #2555083 by maximpodorov, Sam152, Pedro Lozano: Default value of image field is not shown
• #2653356 by maximpodorov: Incorrect watchdog() invocation in entity_field.inc
• #2353853 by solotandem, tien.xuan.vo: Checkbox triggered dependent form items broken for jQuery 1.7+
• #2657834 by paranojik: ctools_context_optional() not usable since "Deprecating PHP4 style constructors" was commited
• #2021357 by zuuperman: Modal broken with jQuery 1.9 (using jQuery Update)
• #2506615 by jhodgdon: Contextual links still not showing for Content pane views in Panels
• #1571612 by das-peter: ctools_fields_get_field_formatter_info: Invoke hook_field_formatter_info_alter() before parsing the formatter information
• #2582541 by kepford: Variant sort page should display the selection rules
• #1542544 by derhasi, Angry Dan, jeqq, thePanz: Support vocabulary machine names in arguments (and context) instead of vid
• #1823088 by mrjmd, kynaa: Autosubmit forms in modals are broken
• #2209775 by timaholt, maximpodorov, reevo, lex0r: Undefined index: access callback in ctools_entity_from_field_context()
• #1775612 by bartram, ianthomas_uk, pwaterz: ctools calling missing file
• #2635876 by sammarks15, mollux: PHP7 - Uniform Variable Syntax updates are causing exported pages to not have names
• #1864478 by IRuslan: Wrong selector in stylizer.js
• #1249684 by jlscott, drupalshrek, marcvangend, hanoii, citlacom, ygerasimov: Exposed filter operator "is empty" causes exposed filter operator choices to disappear
• #2533112 by jribeiro: clone should not be invoked as a function
• #2645612 by japerry: Attributes array doesn't populate classes
• #2288741 by japerry: Add title headings for ctools custom content panes.
• #2288741 by japerry: Add title headings for custom content.
• #2528736 by skyredwang: Deprecating PHP4 style constructors