fix(livesearch): removed custom queries with ege* functions

There was a long standing todo to remove the custom queries in the
livesearch page_handler with elgg_get_entities* functions.
fix(upgrade): Rechecks that all annotation comments have been migrated to entities

The discussion reply upgrade had a bug that caused it to mark also the comments upgrade
as completed. This rechecks whether there still are unmigrated comment annotations left
and marks the comment upgrade as incomplete if annotations are found.

Fixes #7486
docs(travis): Added validation of translated docs sources for es language to Travis
docs(pdf): Added LaTeX build testing to Travis
fix(docs): Fixed docs syntax for the PDF builds.
Merge pull request #7489 from juho-jaakkola/fix_7486

fix(upgrade): Rechecks that all annotation comments have been migrated to entities
fix(release): Corrected release script Windows system compatibility.
Merge branch 'docs-i18n' into 1.9
chore(i18n): update translations
chore(release): v1.9.5
Merge pull request #7491 from Srokap/release-1.9.5

Release 1.9.5
Merge pull request #7384 from jeabakker/livesearch

fix(livesearch): removed custom queries with ege* functions
fix(forms): Removes icon and title links from autocomplete results

Removes the links from all three search options:
 - groups
 - friends
 - users

As a side effect also makes it possible to override:
 - Title used in user/default view
 - Icon params for groups/default view

Fixes #5583
Merge pull request #7487 from Srokap/validate_docs_translation

docs(travis): Added validation of translated docs sources for es language to Travis
Merge pull request #7492 from juho-jaakkola/autocomplete_results

fix(forms): Removes icon and title links from autocomplete results
fix(session): Explicitly closing the session in the shutdown hook to work around APC session problems.

Fixes #7186.
Merge pull request #7497 from brettp/apc_session_close

fix(session): Explicitly closing the session in the shutdown hook to work around APC session problems.
Revert "fix(plugins): trigger plugin hooks when saving plugin settings"
Merge pull request #7504 from Elgg/revert-7471-lowfill-1.9

Revert "fix(plugins): trigger plugin hooks when saving plugin settings"
fix(plugins): trigger plugin hooks when saving plugin settings

The introduction of setPrivateSetting led to failing to trigger the
plugin hooks.

Fixes #6820, #7502