When slow mode is enabled it's possible to open the slow mode dialog again to disable it or to update slow mode settings. The problem is that in this case, the button for saving still has the label "Enable" which is confusing.
This changes the text on the button from "Enable" to "Update" when slow mode is already enabled.
If reload a page after enabling slow mode and open the slow mode dialog again it would show a slow mode interval but wouldn't show Enabled Until value. This PR fixes it.
Too long excerpts don't make sense. They would make UI wonky. We already have a constraint for the `topic_excerpt_maxlength` setting. This adds the same constraint to `post_excerpt_maxlength`.
It also changes the max value of `topic_excerpt_maxlength` from 999 to 1000.
> Backtracking re-render refers to a scenario where, in the middle of the rendering process, you have modified something that has already been rendered.
See more details from the Ember team here https://github.com/emberjs/ember.js/issues/13948.
We call _updateInput from init. _updateInput triggers onChangeInput which mutates a date that was given to future-date-input just a moment ago and a rendering cycle wasn't finished yet.
If the sliding window size is N seconds, then a moment at the Nth second
should be considered as the moment outside of the sliding window.
Otherwise, if the sliding window is already full, at the Nth second,
a new call wouldn't be allowed, but a time to wait before the next call
would be equal to zero, which is confusing.
In other words, the end of the time range shouldn't be included in the
sliding window.
Let's say we start at the second 0, and the sliding window size is 10
seconds. In the current version of rate limiter, this sliding window will
be considered as a time range [0, 10] (including the end of the range),
which actually is 11 seconds in length.
After this fix, the time range will be considered as [0, 10)
(excluding the end of the range), which is exactly 10 seconds in length.