[COMMENT] No need to clear history adapter when removing records -
modification bit indicates, that next fecth of records for history
fragment must be performed with sync.
[MODIF] Store records of entry instead of just records' ids.
[DELETE] Removed inconsistent method.
[REFACTOR] Fetch records of entry from database and cache them.
[MODIF] Added synchronization.
[STYLE] Added newline in XML layout.
[UI] Added records list into Entry Fragment layout.
[ADD] Initialize list of records for current entry in EntryFragment.
[MODIF] Read records of entry with synchronization.
[ADD] Added toString() method for records adapter.
[FIX] Fixed bug with using invalid entry id before it's value is set.