Use `strftime` in `format_date` by @bluebirch

Update pl.ini by @NightPurrer

Updated the Polish translation. It's more completed.

Cleaning up the breadcrumb

More figure captions by @bluebirch

genericons.

Fig captions by @bluebirch

Swedish translation by @bluebirch

We will change the date format in one go later.

We just need to creating the file and load it via config

Maded Polish translation completed in 90 percent by @NightPurrer

Refactor "if" condition for "$_FILES" array by @nikkolai14

Fixes typo in function call by @vevhlos vevhlos

Ignore cache and content directories by @bluebirch

remove unnecessary nested if condition to one liner using AND Boolean operator.

Adding language support - currently only English and German by @RalfZim

system/htmly.php
- Loads language files from folder lang/
- Sets language settings for date and time format
system/includes/dispatch.php
- function i18n() returns translated strings

Added step=1 to the time input to add seconds selection.

Without the step modifier users on Chrome mobile couldn't edit
blogs because the seconds were missing
(hh:mm while hh:mm:ss was expected)

This is my first commit, hope it worked :)

Permision by @Ashrey

Glob() is expensive so cache the category files.

Make the footnote link absolute when on teaser

Added theme copyright for Twenty Fifteen & Twenty Sixteen.