GitLab

- Consistently use /var/www/nag/ as default root for the nag
- Fix broken link to the Apache configuration
- Remove Caching headers from the todo section
- Update the shell backend todo section

- Add link to the home of the net.art generator
- Fix the description of the ZKM exhibition
- Add table of contents
- Add Apache 2.4 configuration stubs
- Move sections around a bit

- Update the version timestamp
- Fix return codes in errors states

- Add function start_dated which starts the dated loop
- Add function start_rotated which starts the rotated loop
- Add function sync_dirs_rotated which represents the rotated mode sync
- Rewrite initialization of different script modes

- Fix the tabs and spaces mess
- Add the concect of modes (see #3)
- Add a section for the default values
- Split the parameters to shared/dated/rotated
- Update the help output to reflect the changes

- Removed option caption (was deprecated)
- Removed option ratio (was deprecated)
- Moved variables to the top of the file

- Improve introduction
- Add a rough draft of the setup section
- Update the parameters section of gallery.php

- Limit the size of the thumbnail parameter
- Add limit parameter to override the number of thumbnails in the grid
- Fix use of FILTER_SANITIZE_URL instead of FILTER_SANITIZE_STRING
- Restructure the grid building

- Fix leakage of login credentials on mouseover of a tags (by removing them)
- Cleanup stylesheet (and emulate link behaviour)
- Move script tag to end of body
- Bind onclick function to body instead of document
- Simplify onclick function (by removing preventDefault workaround)

This fixes the sporadic error of users leaving the gallery because the
custom JavaScript onclick hook did not kick in.

On the other hand this renders the gallery unusable in case JavaScript
is deactivated since the local anchors do not exist on the page.

Zoom/details modal (JS construct edition)

See merge request !1

- Add proper background color (thanks @siusoon)
- Add padding and hidden overflow to body
- Change default size to 24px (fits onto full screen full HD!)
- Removed bottom margins
- Removed title (thanks @siusoon) for obvious reasons (more usable space!)
- Simplified node structure

- Add headers for cache control to reduce network load during refreshes
- Fix missing DOCTYPE declaration
- Fix mixed tabs and spaces (I'm really sorry.)
- Add parameter refresh=n to disable the automatic refresh
- Make better use of available window space
- Wrap the images into a flex div to ease their positioning
- Fix missing placeholders for images

- Added parameter "caption" which turns on captions when provided with
value y
- Added parameter "ratio" which preserves the image ratio when provided
with value y
- Added parameter "size" which defines the thumbnail size in pixels