use monospace font for wiki and issue textareas (fix #2869)

Fix #2872

When use builtin SSH server with concurrent operations, there are probabilities
One connection could use the command from another connections.

Fix this by set SSH_ORIGINAL_COMMAND for each command, not set in global scope.

Display org member's full name in link title.

- add border-radius to filter list items
- use color as background of label for issue/pull view page

Make user search look in username, name and email

Set description meta tag correctly

Fix relative links in markdown files

Replace spaces with "%20" in "urlPrefix", before markdon processing.
The spaces were causing blackfriday (markdown processor) to behave
strange. This fixes #2545.

Make go's build flags a variable

Fix problems with '#' in branchname

- update glide info

This allows the user to specify build flags from the make command
line. For example to force a complete rebuild one could use:

make BUILD_FLAGS='-v -a' TAGS="sqlite"

Make user search function look in username (lower_name), full name
(full_name) and primary email (email). This will benefit searching after
user in "explore", admin panel and when adding new collaborators.

Add proper escaping of '#' in branchname in compare when doing pull
requests. This addresses issue #2822.

Set the description meta tag correctly when there is no repo
description. Also use the  ability to trim trailing whitespaces,
to make the template cleaner.

Set HTML meta values corresponding to repository

Prevent `Forgot Password` for non local users

Use the authors name, and the description of the repo in HTML meta.
Pages without repository context will display as before.

- Fix go-gogs-client#10
- Related to #809

Making AppDataPath customizable.

No guarantee for compatibility with future changes

Add Japanese Fonts

By adding a Japanese font in the less file, easier to see the display in
Japanese.