drupalmoduleupgrader 8.x-1.1

Largely bug fixes, and bringing code inline with latest Drupal core 8.0.x. Brought to you by SprintWeekend2015!

Thanks as always to phenaproxima for his awesomeness, as well as to our numerous NEW contributors, including Chi, tim.plunkett, pfrenssen, and Les Lim!

fccc3c9 Issue #2409537 by webchick: Update composer.lock
76736cb Issue #2409531 by webchick: Fatal error: Default value for parameters with a class type hint can only be NULL in hook_user_save() arguments
73f87cd Issue #2409519 by Les Lim: Config forms must implement getEditableConfigNames()
5e991bb Added a grep target for DRUPAL_ROOT. (#2330441)
4ebc3a8 Added grep targets for the HTML functions. (#2388737)
374618f Added a grep target for current_path(). (#2382211)
d6ef37c Covered stream wrapper management functions. (#2393323)
59562e1 Issue #2403919 by pfrenssen: Config schema has incorrect filename
8bd8af9 Issue #2398621 by Chi: Widget.html.twig contains formatter annotation
8f3f4da Issue #2393557 by Chi: PHP Fatal error: Call to a member function setDocComment()
5bc4198 Issue #2377443: Call to undefined function VariableNode::further() in pharborist
60e8683 Issue #2383239: Remove composer.lock from gitignore
4283c62 Issue #2375783: Use best practices around writing out CMI code
d990f50 Issue #2375715: Don't translate exceptions
df2f5ea Issue #2375871: DeleteHookDeriver Fatal Error
cee8312 DeleteHookDeriver now pulls hook info from config, instead of hard-coding. (#2375539)