docs(actions): Migrated actions section from old Getting Started docs and cleaned up related sections.

Refs #6812.
docs(events): Updated event list and cleaned up existing event docs.

Refs #6812.
docs(hook): Updated hooks docs.

Refs #6812
docs(all): Added getting started for developers.

Refs #6812
docs(all): Cleanup docs.

Refs #6812.
docs(admin): Migrated Getting Started guide from wiki.

Refs #6812.
docs(faqs): Started migrating some FAQs.
fix(bookmarks): fixes more link in group bookmarks widget

Fixes #6583
Merge pull request #7306 from mrclay/6583_bookmark_widget

fix(bookmarks): fixes more link in group bookmarks widget
fix(i18n): improved change password email subject and body text

fixes #6960
Merge pull request #7310 from jdalsem/password-change-translation

fix(i18n): improved change password email subject and body text
fix(widgets): determine default values for num display in content view

also fixed some widget content view not using the widget setting num
display for the output

fixes #6923, #7041
fix(search): keep container param intact when navigating search results

fixes #7250
fix(css): removed datepicker fixed width causing visual bug

datepicker can handle different font sizes, but changing the font size
causes visual issues (too much padding, or text overflow)

fixes #4964
fix(install): prevent WSOD caused by site default language not being defined early enough

This make sure site default language has been defined before installer calls
elgg_echo() for the first time.

Refs #7273
fix(css): stop CSS from overwriting the width and height added in CKEditor

Fixes #7269
Merge pull request #7324 from PerJensen/image_width_height_issue

fix(css): stop CSS from overwriting the width and height added in CKEditor
Merge pull request #7318 from jdalsem/datepicker-width

fix(css): removed datepicker fixed width causing visual bug
Merge pull request #7322 from juho-jaakkola/fix_installer

fix(install): prevent WSOD caused by language not being defined early enough
Merge pull request #7315 from jdalsem/more-results-link-group-search

fix(search): keep container param intact when navigating search results