Incremental loading of dsc data

[cybersiddhu]

The loading process will skip the existing strain and only load the new records. However, it will clean and reload rest of the data types

[cybersiddhu]

• [x] Strain : Check and load.
  • [x] Option for pruning all existing strains.
• [x] Properties : Clean and load.
• [x] Inventory: Clean and load.
• [x] Publication: Clean and load. Duplicate errors.
• [x] Characteristics: Clean and load.
• [x] Genotype: Clean and load.
• [x] Phenotype: Clean and load.
• [x] Parent: Clean and load.
• [x] Plasmid: Clean and load.

[cybersiddhu]

• [x] Plasmid: Check and load
  • [x] Option for pruning before load
• [x] Inventory: Clean and load
• [x] Publication: Clean and load
• [x] Sequences: Clean and load
• [x] Plasmid map: Clean and load.
• [x] Plasmid gene relations: Clean and load.