* Use PathUnescape instead of QueryUnescape when working with branch names

Currently branch names with a '+' fail in certain situations because
QueryUnescape replaces the + character with a blank space.

Using PathUnescape should be better since it is defined as:

// PathUnescape is identical to QueryUnescape except that it does not
// unescape '+' to ' ' (space).

Fixes #6333

* Change error to match new function name

* Add new util function PathEscapeSegments

This function simply runs PathEscape on each segment of a path without
touching the forward slash itself. We want to use this instead of
PathEscape/QueryEscape in most cases because a forward slash is a valid name for a
branch etc... and we don't want that escaped in a URL.

Putting this in new file url.go and also moving a couple similar
functions into that file as well.

* Use EscapePathSegments where appropriate

Replace various uses of EscapePath/EscapeQuery with new
EscapePathSegments. Also remove uncessary uses of various
escape/unescape functions when the text had already been escaped or was
not escaped.

* Reformat comment to make drone build happy

* Remove no longer used url library

* Requested code changes

* add util method and tests

* make sure the title of an issue cannot be empty

* wiki title cannot be empty

* pull request title cannot be empty

* update to make use of the new util methof

* Fix open redirect vulnerability on login screen

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Reorder imports

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Replace www. from Domain too

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Replace '%28' with '#'
Add test case

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Use ResolveReference instead of strings.Replace

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Populate URL field of API commits

* fix orgmode_test

Indexed search of repository contents (for default branch only)

* hide unactive on explore users and some refactors

* fix test for removed Organizations

* fix test for removed Organizations

* fix imports

* fix logic bug

* refactor the toConds

* Rename TestOrganizations to TestSearchUsers and add tests for users

* fix other tests

* fix other tests

* fix watchers tests

* fix comments and remove unused code