* create properties component
* refactor app.rs
* add a test for checking if gobang has overlappted keys
* add keys for switching tabs to properties
* fix tab
* add serialize
* update record_table
* add properties group
* use serialize only in tests
* remove alias
* remove query field
* implement key config
* use key config in help component
* use key config in databases component
* use key config in error component
* use key config in connections component
* set commands
* use database/table as a table component name
* fix a test for get_text
* use key config in tab component
* fix function name
* add focus_connections key
* use quit exit key
Sho Hirose
Takayuki Maeda