Move all password handling to EncryptedJournal

This commit should greatly simplify all password handling logic. No passwords are stored in the config dict anymore. Only the Encrypted Journals have any password related logic. I also had to remove some password fields from the test files, which shows how dangerous the previous approach was. A slight code change could've leaked passwords to the config file. However, I had to change the install progress a little bit to make this work. It will now not ask you for a password right away but rather if you want to encrypt or not. Only if you reply 'y' will it ask you for the password later on.

features/data/configs/bug153.yaml

@@ -6,7 +6,6 @@ highlight: true
 journals:
   default: features/journals/bug153.dayone
 linewrap: 80
-password: ''
 tagsymbols: '@'
 template: false
 timeformat: '%Y-%m-%d %H:%M'

features/data/configs/dayone.yaml

@@ -7,7 +7,6 @@ highlight: true
 journals:
   default: features/journals/dayone.dayone
 linewrap: 80
-password: ''
 tagsymbols: '@'
 timeformat: '%Y-%m-%d %H:%M'
 indent_character: "|"

features/data/configs/empty_folder.yaml

@@ -7,7 +7,6 @@ highlight: true
 journals:
   default: features/journals/empty_folder
 linewrap: 80
-password: ''
 tagsymbols: '@'
 timeformat: '%Y-%m-%d %H:%M'
 indent_character: "|"

features/data/configs/encrypted.yaml

@@ -7,7 +7,6 @@ highlight: true
 journals:
   default: features/journals/encrypted.journal
 linewrap: 80
-password: ''
 tagsymbols: '@'
 timeformat: '%Y-%m-%d %H:%M'
 indent_character: "|"

features/data/configs/markdown-headings-335.yaml

@@ -7,7 +7,6 @@ template: false
 journals:
   default: features/journals/markdown-headings-335.journal
 linewrap: 80
-password: ''
 tagsymbols: '@'
 timeformat: '%Y-%m-%d %H:%M'
 indent_character: "|"

features/data/configs/multiple.yaml

@@ -13,7 +13,6 @@ journals:
     encrypt: true
     journal: features/journals/new_encrypted.journal
 linewrap: 80
-password: ''
 tagsymbols: '@'
 timeformat: '%Y-%m-%d %H:%M'
 indent_character: "|"

features/data/configs/tags-216.yaml

@@ -7,7 +7,6 @@ template: false
 journals:
   default: features/journals/tags-216.journal
 linewrap: 80
-password: ''
 tagsymbols: '@'
 timeformat: '%Y-%m-%d %H:%M'
 indent_character: "|"

features/data/configs/tags-237.yaml

@@ -7,7 +7,6 @@ template: false
 journals:
   default: features/journals/tags-237.journal
 linewrap: 80
-password: ''
 tagsymbols: '@'
 timeformat: '%Y-%m-%d %H:%M'
 indent_character: "|"

features/data/configs/tags.yaml

@@ -7,7 +7,6 @@ template: false
 journals:
   default: features/journals/tags.journal
 linewrap: 80
-password: ''
 tagsymbols: '@'
 timeformat: '%Y-%m-%d %H:%M'
 indent_character: "|"

features/multiple_journals.feature

@@ -48,4 +48,4 @@ Feature: Multiple journals
         these three eyes
         n
         """
-	Then we should see the message "Journal 'new_encrypted' created"
+	Then we should see the message "Encrypted journal 'new_encrypted' created"