UI/UX update

Main changes:

dark mode
sticky top bar
in line blog support
new icons (used with buttons)
new icon / page logo
top pick sending (sends mail about photos take on the same week but previous years)
improving sharing UI
refactored settings
colored and grouped map path. (with path bending for flights or long distances)
data patter search ( search query like: last-7-days:every-year)
Folder sorting (if enabled in settings) now also uses oldest photo of that folder (preciously only last modified data was used) #751

Breaking changes

you will need to reset the DB
you will need to recreate the config file
Default thumbnail generation algorithm changed -> all thumbnails/photos will be regenerated #745

The spaces for ffmpeg custom options are strict. by @lijunle in #597
Redirect ffmpeg output to logger. by @lijunle in #598
document issue #177 about overriding default sort order by @kagahd in #620
Add matchType to getPositionSearchQuery by @SmartFinn in #635
docs: fix text-align in list by @alexislefebvre in #664
Add SIGTERM handler by @Rickkwa in #663
docs: fix the “fork me” ribbon by @alexislefebvre in #665
docs: add note about apache proxy and sub folders by @alexislefebvre in #668
Top pick sending per e-mail by @bpatrik in #685
Improving e-mail sending #683 by @bpatrik in #686
Showing sharing history and preventing accidental sharing by @bpatrik in #693
New icon #587 by @bpatrik in #699
Replacing app icon with new outline camera + raspberry head icon by @bpatrik in #702
Photo groupping #706 by @bpatrik in #707
Inline or groupped blog #711 by @bpatrik in #712
Matroska container header meta data parsing by @GenericGuy in #710
Adding E2E testing with cypress by @bpatrik in #715
Update docker-compose.yml to refer to version 3.9 rather than 3 by @shankargopal in #724
Update README.md - Typo by @AndrewBudziszek in #727
Update Dutch translation by @mrtnbr in #737
Some small fixes in the Dutch translation. by @mrtnbr in #739
Fixed some text by @mrtnbr in #741

Full Changelog: 1.9.5...2.0.0