Fix style of DatabaseExceptions
Remove “fields” from “Expand/Collapse all fields”
Merge pull request #2022 from DavidOliver/expand-collapse-fields

Remove “fields” from “Expand/Collapse all fields”
Fixed PHPdoc @param and @return, added @throws (as per PhpStorm). Did not change actual code.
Merge pull request #2023 from DanMan/phpdocfix

Updates to PHPDoc comments
Invalidate config.php in OPcache on preferences save
Force invalidation of config.php regardless of last modified value

Some filesystems may be set not to record last modified dates if I remember correctly. Even if not, forcing shouldn’t be a problem and seems safest.
Invalidate data source and event files in OPcache on save
Add CSRF to the frontend and backend. RE: #1874
Some minor updates for documentation consistency
Merge pull request #2025 from DavidOliver/opcache

Handle PHP5.5's OpCache with flat files. Closes #2017
Focus first input in section editor

See #2021
Restore collapsible states for new sections

See #2021
Updates for the backend javascript for XSRF. Using POST only when necessary. RE: #1874
Merge
add drag cursor when dragging itens on section editor see #2021
Merge pull request #2026 from avanteweb/issue-2021

add drag cursor when dragging itens on section editor
Fix #2028
Improve extension compatibility check
Fix entry pagination

Closes #2029