Translations shoud be used instead of string literals

[NoNoNo]

In pages there are multiple untranslated texts, e.g.

grav-plugin-login/pages/login.md

Line 2 in 388f1ad

title: Login

grav-plugin-login/pages/login.md

Line 42 in 388f1ad

# User Login

grav-plugin-login/pages/forgot.md

Line 2 in 388f1ad

title: Forgot password

grav-plugin-login/pages/forgot.md

Lines 20 to 22 in 388f1ad

	# Recover your password
	Enter your email to recover your password

grav-plugin-login/pages/profile.md

Line 2 in 388f1ad

title: Profile

grav-plugin-login/pages/profile.md

Line 81 in 388f1ad

# Profile

grav-plugin-login/pages/unauthorized.md

Line 2 in 388f1ad

title: Unauthorized

grav-plugin-login/pages/unauthorized.md

Line 7 in 388f1ad

# You don't have access to this page...

grav-plugin-login/pages/reset.md

Line 2 in 388f1ad

title: Reset password

grav-plugin-login/pages/reset.md

Lines 33 to 35 in 388f1ad

	# Password Reset
	### Username: {{uri.param('user')}}

grav-plugin-login/pages/register.md

Line 2 in 388f1ad

title: Register User

grav-plugin-login/pages/register.md

Lines 58 to 60 in 388f1ad

	# Register
	Create a new user account by entering all the required fields below:

---

And, en passant, there is a jump from H1 to H3 in this file:

grav-plugin-login/pages/reset.md

Lines 33 to 35 in 388f1ad

	# Password Reset
	### Username: {{uri.param('user')}}