repo: update repository description field to contain more than 256 symbols (#5219)

* Update repository description field to contain more than 256 symbols

- update repository model - description field now is `TEXT` and limited by 4000 symbols
- new migration
- add description to html forms - repo creation and repo settings
- add translation for description

* Update for description field, new features

- add autosize (height) for description textarea, new plugin
- set max description length to 512 symbols
- update locales

* Fix migration - typo in var

* Update repo description behaviour

- add textarea autosize for /repo/create
- add symbols counter under description testarea (create/edit)

* Fix function definition - it a var

* Revert ru-RU locale

* Update by review

- Use type `varchar(512)` in migration
- Remove unused files from autosize plugin

* Fix migration - new project paths

* Fixes after review 2

- copyright year
- format includes
- use switch instead of multi-if

* Remove unused `default:` option.

2 files changed, 2 insertions, 0 deletions

diff --git a/routes/repo/repo.go b/routes/repo/repo.go
index 29e2a8e7..b8afb340 100644
--- a/routes/repo/repo.go
+++ b/routes/repo/repo.go
@@ -75,6 +75,7 @@ func Create(c *context.Context) {
 	c.Data["readme"] = "Default"
 	c.Data["private"] = c.User.LastRepoVisibility
 	c.Data["IsForcedPrivate"] = setting.Repository.ForcePrivate
+	c.Data["RequireAutosize"] = true
 
 	ctxUser := checkContextUser(c, c.QueryInt64("org"))
 	if c.Written() {
diff --git a/routes/repo/setting.go b/routes/repo/setting.go
index 71827cc3..edf6216d 100644
--- a/routes/repo/setting.go
+++ b/routes/repo/setting.go
@@ -34,6 +34,7 @@ const (
 func Settings(c *context.Context) {
 	c.Title("repo.settings")
 	c.PageIs("SettingsOptions")
+	c.Data["RequireAutosize"] = true
 	c.Success(SETTINGS_OPTIONS)
 }