Fix bug where "With attachment" option in search filter wasn't selected after return from mail view (#1489774)

Conflicts:

	CHANGELOG
Hide PHP Warning: substr_compare() The length cannot exceed initial string length
Fix compatibility with PHP 5.2
Merge branch 'release-1.0' of github.com:roundcube/roundcubemail into release-1.0
Apply user-spefici replacements to group's base_dn property (#1489779)
Make sure preformance info logged in devel_mode uses locale-independent number format
Foward locking parameter
Append group parameter to attachments set by plugins if not present
Update Changelog
Avoid unexpected redirects to inbox after auto-saving a draft (#1489789)
Fix "washing" of unicoded style attributes (#1489777)

Conflicts:

	tests/Framework/Washtml.php
Update changelog
Fix messages index cache update under some conditions (e.g. proxy) (#1489756)
Fix lack of translation of special folders in some configurations (#1489799)
Fix disabled create filter action
Fix XSS issue in plain text spellchecker (#1489806)
Fix invalid page title for some folders (1489804)
Fix regression where title attribute for long message subjects wasn't used on IE

Conflicts:

	program/js/app.js
Fix invalid and infinite redirect for unsupported browsers

Conflicts:

	program/js/app.js
Fix compat. with PHP 5.2. (#1489813)