Added the reload features for the information and relation panel.
Merge branch 'some_reload_features'
Adjusted the information panel width.
Merge branch 'fixed_information_panel_width'
Change version number.
Merge branch 'change_version'
Keep and auto-complete the password on the login panel.
Merge branch 'sync_across_browser'
Create README.md
Added a new feature to delete a relation.
Merge branch 'delete_fk'
Created a new service to collect some queries from some controllers.
Merge branch 'refactoring_queries'
Supported a new feature to create a new relation.
Merge branch 'add_fk'
Supported that a null value can be used at editing row.
Merge branch 'revise_edit_value'
Supported the NULL value when creating a new row.
Supported the expression at inserting and updating a row.
Merge branch 'support_function'