New event for trimming recent changes and refactor lib/exe/indexer.php

Translation update (cs)

Translation update (it)

Translation update (ro)

The matches our scheme of where_data_what better

Translation update (ja)

authmysql and authpgsql were replaced by authpdo two releases ago.

fixed typos

Looks like the domain we used to test this on expired.

Translation update (ru)

Update PHP logo URL to HTTPS

- solves mixed content warnings on web security analyzers
- saves time since http://php.net/images/php.gif will redirect to https://secure.php.net/images/php.gif anyway.

The actual draft text got lost when we changed to showing the diff
instead of the full draft.

Add simple catch-all to left install.php div

Translation update (ka)

unlock pages on viewing them

add user interface back to resendpwd action. fixes #2349

improve search as a primary means to create new pages

Specifically, this pull request checks if the current query is already a
valid pageid and then return that as suggested pageid.

Also, tests are added for this method.

Fixes #2355

PS: We may want to somehow better educate/nudge users to use the better
way of creating pages by creating links on existing pages.

and actually use it in the edit form.