Replace old call to css_styleini

fixes #2330

Translation update (ru)

Honor type setting for recent changes. fixes #2322

Translation update (fr)

Fix invalid HTML

Also, for consistency this initializes also $num with 0, while ensuring
that the first FT_SNIPPET_NUMBER results with a $cnt>0 have a snippet.

Punctuation is more natural, makes sense with CSS switched off
and makes screenreaders add a little pause.

Translation update (de)

Translation update (es)

In #2286 the 2nd level heading in the intro was removed, so the h3
should be promoted to h2.

This implements some of the changes discussed in #2314:

1. last mod and number of hits are on the same line and always shown
2. There is a class around the last mod string so it can be
hidden/replaced by an icon
3. All items in the resultBody returned by the event are wrapped in
`<dd>` tags to ensure validity. They get their array key as class
4. There is still a wrapper div around each result for styling purposes

Translation update (ru)

Recent changes to the search results page added various divs
to the pre-existing description list, which is invalid.
This fixes that by a) removing a couple of unnecessary elements
and b) interpret the 'last modified' line as another 'dd'.

The advanced search options list links with an invalid empty target
attribute. This fixes that by skipping empty parameters.

Geshi Option parsing

fallback for new section editing. fixes #2311

The search buttons from the search form on the top of the page
as well as the search page both produce invalid HTML
due to the name attribute being empty.
As the name is required for each of the PHP functions
producing the buttons and is passed as an empty string,
this makes sure that parameters with empty strings get skipped.

Prevent HTML and JS injection in section names

Before this change, HTML and some JS code (as far as it was not escaped
by json_encode) could be injected into the output as the closing pattern
that is checked by the regex is not escaped in JSON (see test case).

The displayed message now shows the target that was passed, which should
help identifying the troubling plugin.

Instead of failing, we fix the data ourselves - this code will be
removed in the future.

DokuHTTPClient: Add handling for 204: No Content responses

Translation update (hr)

This fixes a bug that would occur if the DokuHTTPClient receives a 204
response, e.g. as a result for a request to delete something. It would
still try to read the body, which fails, thus producing a timeout and
finally throwing an exception.

This fix instructs the HTTPClient to not read the (not existing) body if
it receives a 204.

monkey patched GeSHi/geshi-1.0#104

Quotes are now optional, the options are spearated by space

bring back the namespace in braces for pagelookup results

* private_testing: (375 commits)
  make testing of inaccessible methods easier
  updated composer dependencies
  renamed ActionRouter::checkPermissions to checkPreconditions
  shortened new search configs
  Section edit: corrected pattern 'SEC_EDIT_PATTERN'
  fix regex character class. fixes #2301
  fix: switch extensions if stylesheet in style.ini doesn't exist
  refactor: rename and move function to set $JSINFO
  typo. capital P for class name
  fix: add missing global $ACT for $JSINFO
  refactor: use native json_encode for $JSINFO
  refactor: rename JSINFO.DOKU_UHN and JSINFO.DOKU_UHC
  refactor: extract $JSINFO initialization into tpl_ function
  refactor: rename dta and dtb parameters
  doc(search): parameter must be string or false
  doc(search): highlight is expected to be an array
  show adavanced tools with JavaScript only
  adjusted language files to remove outdated string
  removed sub header from all languages
  added aria attributes
  ...

While it's generally frowned upon testing privates, it can often be
useful and the easier way to write tests. Eg you want to test something
complicated method that is important, but you do not want to expose it
directly to other classes...

This new method uses reflection to make access to such methods possible
from within tests without the need for intermediate classes.