This install Go package on building for caching and faster builds

NOTE: useful when logging in via OpenID and connecting to user

* social_register_hepler_msg -> social_register_helper_msg

* register_hepler_msg -> register_helper_msg

* Update pt-BR translations

* Minor updates to translations

* Change "Pull Request" to "pull request".
* Change "Problemas" to "Issues" to keep consistency.
* Change "Propriedade" to "propriedade".
* Change "Wiki" to "wiki".
* Rename "questão" to "issue".
* Update almost all the strings from "[action]" section.

* Added new pt-BR translations

Signed-off-by: Stephen Brown <steve@evolvedlight.co.uk>

* Minor language file tweaks (largely fixing awkward grammar).

Signed-off-by: Tux <write@imaginarycode.com>

* Modify federated_avatar_lookup_popup message

Fix inconsistencies in unit test fixtures

and updating the vendor directory

* Redirects for renamed repos

* Remove unused phrase from locales

Avoid identical making calls to GetUserByID(..) in SignedInUser(..)

When an open pull request got manually merged mark the pull request as
merged

* Add ENABLE_PPROF to app.ini and start pprof if true on localhost:6060

* Add comment for golint to blank pprof import

Because the absence of the listenAddr is what is expected.
The error will only be then when we can't remove.

Added some missing German translations

Fix bug in removeOrgRepo

Fix inconsistencies in test fixtures

* Add units concept for modulable functions of a repository

* remove unused comment codes & fix lints and tests

* remove unused comment codes

* use struct config instead of map

* fix lint

* rm wrong files

* fix tests

* Allow using custom time format

I need to use custom time format in `conf/app.ini' like 

    FORMAT = 2006-01-02 15:04:05

so that Gitea will display '2017-01-30 08:41:49'
check this answer for more constants to format date  <http://stackoverflow.com/a/20234207/2570425> 

PS: First GO commit

* Refactor and validate TimeFormat (must have 2006, 01, 02, 15, 04 and 05)

Also add unit tests

refactor: set default order by recently star on start tab

Changed English word "user" to German word "Benutzer" as suggested by https://github.com/go-gitea/gitea/pull/727#issuecomment-274483755

* track assignee for issue

* fix lint

* use getUserByID instead Get

This change corrects a few logging issues:

 * Standardized formatting errors with '%v'.
 * Standardized failure warning word usage.
 * Corrected an instance of using the standard log library when
   the gitea log library should be used instead.

Remove unnecessary calls to repo.GetOwner() in context handlers

* Use local folder for xgo

* Always do crosscompile and testing to fail early

* Added mips* values for boltdb

In order to get master building again I have applied these 2 additional
files to boltdb. This should get dropped when
https://github.com/boltdb/bolt/issues/656 gets solved.