question_answer 6.x-1.7

Changes since 6.x-1.6:

• #1785426: Update README, redirect to documentation pages.
• #1888628 (follow-up) code refactoring to reduce complexity.
• #1888628 by jcisio: Added Hide the answer field.
• #1785432 by ec, jcisio: Fixed Comments set to closed after automatic selection of a best answer.
• #1884838 by ssm2017 Binder: Fixed only variables should be passed by reference on settings page.
• #1047170 by ec | jcisio: Added Option for that only first-level comment can become an answer.
• #1555040: Fixed Duration field should be optional.
• #1770608 by jcisio: Add more description to settings page.
• #1689280 by ec, jcisio: Added the ability to change a previously selected best answer by a new one.
• #1689058 by ec: Fixed Remove the maxlength variable when removing the module.
• #1689810 by ec: Added Support for Talk module
• #1688914 by ec: Added a new perm to let users other than the author select a best answer.
• #1686184: Documentation on duration field
• Add condition check for VotingAPI