Input class: change behavior of get_post() method, add post_get() method

followup to PR #2522
Improve changelog entry
Merge pull request #2598 from vlakoff/develop

Input class: change behavior of get_post() method, add post_get() method
add '$' at news_section.rst file
Detect Windows Phones

Added 1 line to the platforms 'windows phone' => 'Windows Phone', 
This will return the OS of the "new" generation of windows phones instead of "Unknown windows Os"
Merge pull request #2603 from za/develop

add '$' at news_section.rst file
Merge pull request #2604 from msegers/patch-1

Detect Windows Phones
Fix $replace parameter handling in get_config()

Code was reached only on first function call, then short-circuited because of the reference cache.
Ensure get_config() optional argument is an array, remove useless test
Allow items to be set even if they were not present yet
Adjustments in static reference handling
Merge pull request #2609 from vlakoff/develop-2

Fix $replace parameter handling in get_config()
Kill the damn kitten
Lower precision for the CI_Benchmark::elapsed_time() test - there's no way to reliably test it