Theme install:
* Move the "based on" string below the rating to avoid wrapping to a second line.
* Reduce the gap between the theme screenshot and description.
* Fix Install button height on mobile.

props obenland, ocean90.
fixes #28148. see #29556.

git-svn-id: https://develop.svn.wordpress.org/trunk@29959 602fd350-edb4-49c9-b593-d223f7449a82
In wp.updates.decrementCount(), only display the count if it's a valid non-negative integer.

props jdgrimes.
fixes #29527.

git-svn-id: https://develop.svn.wordpress.org/trunk@29960 602fd350-edb4-49c9-b593-d223f7449a82
Use proper functions for escaped translations.

pros jcastaneda.
fixes #30012.

git-svn-id: https://develop.svn.wordpress.org/trunk@29961 602fd350-edb4-49c9-b593-d223f7449a82
Move password hint text to a function. Add 'password_hint' filter.

props convissor.
fixes #21243.

git-svn-id: https://develop.svn.wordpress.org/trunk@29962 602fd350-edb4-49c9-b593-d223f7449a82