Directory with space(s) get its url encoded to %2520

[ghost]

Version: 1.1.0

Steps to reproduce:

1. Create a directory and give it a name containing one or more spaces.
2. Open it
3. You'll find the following bugs:
   3.1. If the directory contains another directory with space(s), it will fail to load if you try to open it. The parent directory's url path will get its space(s) encoded to %2520.
   3.2. Navigating using the breadcrumb__directory link (either with subdir or not) results in the same bug. Looking at the source, the spaces also get converted to %2520.

Expected:

1. The % character in %20 should not be encoded to %25.
2. Improvement: encode all spaces in the url with %20 or +.
3. Improvement: keep the spaces in the breadcrumb__directory link text.